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What's going on here?

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It's the mainframe. It's the mainframe!

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Morning, morning, M5 is in Melton. Morning, morning, M5 is in Melton.

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What's going on here?

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It's the mainframe. It's the mainframe!

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The mainframe!

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Doug instructions

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Doug instructions

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What is error?

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What is solution?

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Revisit.

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Revisit.

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Revisit.

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Revisit.

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Well, Jamie, since 2002, you know, we've had our fair share of mottos that have helped define this show.

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I mean, there was...

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One in doubt.

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C4.

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And who could forget?

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Holy crap! Run!

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Run! Run!

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And then, of course, there's the classic iconic failure is always an option.

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Well, we do screw up a lot.

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Yes, but one of the things I love that we do on this show is if we make a major mistake,

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we are willing to try a new methodology and to test it again.

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And that's what this whole episode is about.

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We are tackling fan complaints pretty much for the last time.

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What do we got?

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Well, later we're going to test two Mythbuster icons that fans said we got wrong.

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One is, what is bulletproof?

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And three, two, one!

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And what is bombproof?

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Holy ****!

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But first, remember San Francisco Drift?

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Sure.

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Yeah, baby.

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Right, so in that episode we proved beyond a shadow of a doubt that on a regular road surface,

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drifting is not faster than regular driving really fast.

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But fans said that if we'd done that test on dirt, we would have come to a completely opposite result.

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So, it's time to break out our drifting moves.

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Yes, it is.

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Hey, here we go.

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When Adam and Jamie first slid for science...

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Oh my God!

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Wow!

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They proved that drifting is never faster than regular driving.

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Woo!

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But by conducting all of their tests on tarmac, fans cried foul.

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So in a suitably dusty destination, it's all systems go on a final season drifting do-over.

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Dude, this looks perfect.

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Yeah, lots of slipping and sliding, huh?

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Let's do it.

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I'm standing in a quarry in Ion, California, and behind me is a lake you might recognize

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because we've blown a lot of stuff up there.

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We've blown up boats.

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We've even blown up sharks.

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However, we have never tested a driving myth up here, and that ends today because surrounding this lake are a bunch of beautiful, flat clay surfaces perfect for drifting on dirt.

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We're gonna race, we gotta need a course.

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We're gonna put one together.

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Woo-hoo!

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Yep, before driving into the dust...

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That is our start line.

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...the guys must first plot out a path...

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Okay, slow down.

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...that'll let them put this myth to the ultimate test.

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If we're gonna test drifting versus not drifting, we're gonna have to have a course that has both curves and straight aways that can really put the car to the test.

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In total, their course is nearly two miles of twists and turns that'll challenge their driving skills to the max.

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So, what's the plan?

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Now remember that the last time we tested drifting, we concluded that straight driving was faster.

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Dude, that's a result. That's beautiful.

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People kept writing us and saying, on a dirt track, drifting will be faster, and that's what we're testing.

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Jamie is the control.

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He's doing the straight driving, attempting to make it around this track as fast as possible without drifting.

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I will be doing the opposite.

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I'm gonna be doing this entire friggin' thing sideways if I can.

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Right there. Stop right there.

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So, first up is the non-drifting control, a.k.a. James Franklin Heinemann.

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First official timing run. Control.

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Five, four, three, two, one, go!

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Jamie will do two pedal-to-the-metal laps.

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And his best time will be the benchmark that Adam has to beat.

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Yeah, baby!

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But for an accurate comparison, it's crucial that Jamie doesn't drift at all.

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And there he goes.

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Which, on dirt like this, is downright difficult.

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To not drift at all, I'm simply taking the racing line.

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That means braking as late as possible as I approach a bend.

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Taking that bend as fast as I can without losing traction, and then accelerating out of it like there's no tomorrow.

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Reaching a top speed of 52 miles an hour without ever losing traction at a turn.

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Jamie comes home in...

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Two minutes, 24 seconds.

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A quick reset later, and it's lap two of two.

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Three, two, one, go!

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Every time he takes off, it's like a film about the dust bowl.

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Once again, Jamie pushes the car to the limit through turns big and small.

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Let's cut to the inside of the car, see if Jamie's having fun.

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And his time?

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Okay, here he comes.

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Seems a bit faster, okay?

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He's going for it, and...

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Two minutes, 22.

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Man, that is fast.

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It's not only fast, but by never drifting, Jamie's lap is the perfect control.

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With my skill and with that car, I'm as fast as I'm gonna get.

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But before Adam tries to better it, there's another revisit to redo.

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Well, Jamie, it's time to go back into some very familiar territory for you and I.

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What is bulletproof?

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Why's that?

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Well, first we have an amazing fan submission story about supposedly bulletproof fish tanks.

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That I've got to try.

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Yeah, I totally agree.

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But first, it's a return to the very first item we ever shot at, and that is this.

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A simple brass lighter.

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Which turned out to be not bulletproof at all.

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Not even a little bit, but fans insist that we got this wrong,

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that there is a circumstance under which a lighter can stop a slug.

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Well, I guess it's now or never.

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Shooting at Stuff has been our bread and butter on Mythbusters over the years.

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To more specifically, we have shot hundreds of objects to find out and answer the question,

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what is and isn't bulletproof from belt buckles.

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Oh, it went all the way through.

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But look at what it did to the buckle.

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It caught it like a catcher's mitt.

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Two cars.

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That didn't suck.

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To pizzas.

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Oh, check out my new bulletproof vest, man.

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But it all began with this.

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The humble, fun-based lighter.

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And 12 years ago, we found that these are not at all bulletproof

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by putting a 22-round cleanly through it.

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We're going hot.

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It was way back in 2004 that the guys lacerated a lighter.

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Looks like you hit it pretty good.

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But fans were furious because an article like this alleged that a lighter did stop a slug in a botched burglary.

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So it's time for a final season two over to retest a decade-long dispute.

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We're using a 22-caliber rifle firing a full metal-jacketed round with a muzzle velocity of 1,440 feet per second.

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But will the guys really get a different result?

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What's that for?

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You'll love this.

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That's for holding our lighter.

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All right.

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To find out, they're cranking the coverage to the max.

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In the early days of Mythbusters, if we wanted to get a better viewpoint on a bullet going through a lighter,

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for instance, all we really had as our option was to just freeze frame our video.

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But the last 13 years have seen an incredible amount of advancement.

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This is today's ultra-high-speed camera.

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It will record this bullet shot at 28,000 frames per second in HD.

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This is our slow-poke high-speed camera, which will record it at 6,900 frames per second,

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all to give us a better vantage point on what's actually happening.

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With all cameras rolling, it's showtime.

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All right.

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Our first shot, guy with a lighter in his pocket versus a direct shot from a 22-caliber rifle firing a full metal-jacketed round.

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You ready?

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Firing in three, two, one.

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It's a bull-jack on the breast.

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I think that was a perfect shot.

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But it's bad news for Ballistics gel buster.

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So that bullet made it all the way through.

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There's cotton from the lighter in the wound.

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I'm going to go out on a limb and say, this guy is dead.

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He's dead, Jim.

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So that experiment worked beautifully.

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Jamie pulled the trigger.

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The bullet exited the rifle at about 1,400 feet per second, and bang!

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It hit the lighter dead center.

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But then, just like in 2004, the bullet kept going through buster and almost came out the other side of him.

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There we go.

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I mean, the lighter did virtually nothing.

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So how come so many people told us we got this wrong?

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How come there's a story saying that some guys later did stop a slug?

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Well, we can think of only one thing.

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I mean, the mythical slug that we're talking about just can't have been a direct hit.

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It had to have bounced off something else on its way to the lighter.

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And that is where we're going next.

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We are about to enlist the help of famous Irish Ballistics expert, Rick O'Shea.

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Later on the guy's last ever revisit.

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Fire in the hole!

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Adam and Jamie want big boo.

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Wow, holy s***.

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But next, will the lighter bounce back from the brink?

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Hey!

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Since 2004, I can see you.

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The mythbusters have tested the bullet-stopping capabilities of 35 everyday items.

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Holy Cremoli.

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But does internet gossip like this prove their very first foray was false?

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Well, no.

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Because this episode's retest replicated that first result.

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Right in the middle of his heart.

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But all is not lost for the lighter.

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Now it's time to set up a ricocheting bullet.

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Now, we have some experience with ricocheting bullets, I mean, on purpose.

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We did an episode a while back in which we found out several vital things about ricocheting.

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And I see a hole in me.

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The best material to ricochet a bullet off of is this, a concrete paver.

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So we're going to set this up at an angle that helps our bullet hit our dude.

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The theory is that by bouncing off the paver, the bullet's speed will be so reduced that a lighter may then stop it.

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I think that puts us in the ballpark.

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But because ricochets are notoriously unpredictable, they're starting without the lighter in place.

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This could be a little tricky to get this all dialed in.

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So we've come up with a setup that hopefully it'll make it easier.

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Starting with the gun, which is mounted here, and it's aimed at our ricochet brick here.

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Hopefully it'll bounce off of this and then into this piece of cardboard here, leave them a mark,

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which will tell us where to put our dummy with the lighter on it without a whole lot of messing around.

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All right, sir, we're all set up for the ricochet. You ready to shoot?

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Yeah.

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For test one, the paver is at an angle of 45 degrees relative to the rifle.

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Firing in three, two, one.

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But the bullets know where to be seen.

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It didn't go through our card. Let's take a look at high speed and find out where that bullet went.

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Okay.

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Oh, wow. Okay. There it is. It reflected at two part an angle.

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Yeah, so we need to shallow that out.

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Our first shot into the 45 degree paver ended up bouncing the bullet so much that it flew straight past our cardboard target.

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So we're just going to shallow the angle of the brick, try it again, see what happens.

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Yep, for test two, Adam reduces the angle to 25 degrees.

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Three, two, one.

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Wow.

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This time the bullet did hit the target, but only after breaking to bits.

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I count four holes.

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So next they shallow the angle again to just 15 degrees.

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And three, two, one.

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And just like that, they get the ricochet there out, a bounce that not only hits the target, but also stays in one piece.

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That's perfect.

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And there's one giant hole and one dent.

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That means the guys can bring Buster back.

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Don't overstress yourself, old man.

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And line him up so that his lighter is directly behind the previous ricochet's path.

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That's actually perfect.

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Then the guys sub in a clean paver.

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Beauty.

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And they're all set, but a little apprehensive.

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And here it is for the money.

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However unlikely we are going to bounce a .22 caliber full metal jacket bullet off of a paving stone into a lighter and see if it goes through or bounces off.

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Okay, and to the lighter, hopefully in three, two, one.

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Hey! Hey!

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The lighter bounced off the dude, which means something hit the lighter, which really should have been our bullet.

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Incredibly, their bullet ricocheted into the lighter on their very first try.

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It's almost like we knew what we were doing.

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But did the lighter save Buster's life?

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Hey!

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Dude, it is precisely where we expected it to hit, and it did hit.

243
00:15:51,000 --> 00:15:56,000
And clearly, the bullet bounced off the lighter.

244
00:15:56,000 --> 00:16:00,000
Well, that is not only beautiful, but quite definitive.

245
00:16:00,000 --> 00:16:04,000
Take a straight shot at a lighter with a .22, and it goes right through that sucker.

246
00:16:04,000 --> 00:16:10,000
But let that bullet bounce off some concrete at even a shallow angle, and no, it bounces right off.

247
00:16:10,000 --> 00:16:18,000
I would never challenge the man or woman that told me this lighter saved their lives, and now we know how such a thing might be possible.

248
00:16:19,000 --> 00:16:22,000
It's a result to vindicate the viewers.

249
00:16:22,000 --> 00:16:25,000
Ten years on, and a lighter can't stop a bullet.

250
00:16:25,000 --> 00:16:29,000
Provided that bullet has first bounced.

251
00:16:29,000 --> 00:16:37,000
And that gives this myth a brand new conclusion.

252
00:16:37,000 --> 00:16:43,000
With one myth back from the dead, it's back to drifting on dirt.

253
00:16:43,000 --> 00:16:47,000
Where Jamie clocked a super fast lap.

254
00:16:47,000 --> 00:16:49,000
Look at him go.

255
00:16:49,000 --> 00:16:52,000
Without ever losing traction.

256
00:16:52,000 --> 00:16:56,000
Two minutes, 22 seconds.

257
00:16:56,000 --> 00:17:03,000
Look, it's worth restating that we stand 100% behind the results of the first time we conducted this test.

258
00:17:03,000 --> 00:17:09,000
Hollywood's always leading you to believe that sliding around a corner is faster than driving around a corner.

259
00:17:09,000 --> 00:17:15,000
And we found definitively that driving is faster on asphalt.

260
00:17:15,000 --> 00:17:19,000
But fans wrote and said we would come to a totally different result if we tested it on dirt.

261
00:17:19,000 --> 00:17:21,000
And so that is what we are doing here.

262
00:17:21,000 --> 00:17:30,000
We are driving this dirt course while driving and also testing that against drifting to find out which one is faster and whether or not the fans are right.

263
00:17:30,000 --> 00:17:39,000
Remember, Jamie's fastest non-drifting lap was two minutes, 22.

264
00:17:39,000 --> 00:17:42,000
But with Adam ready to drift like a pro.

265
00:17:42,000 --> 00:17:48,000
Okay, three, two, one, go.

266
00:17:48,000 --> 00:17:52,000
Can he beat that benchmark?

267
00:17:55,000 --> 00:17:57,000
Adam's off.

268
00:17:57,000 --> 00:17:58,000
Now throttle.

269
00:17:58,000 --> 00:18:00,000
Yeah, that's it.

270
00:18:00,000 --> 00:18:10,000
And immediately he's using a complex combination of steering, throttle and brake to lose traction with the dirt and drift.

271
00:18:10,000 --> 00:18:14,000
And use the power to steer the car. Yeah, baby.

272
00:18:14,000 --> 00:18:16,000
Through every turn.

273
00:18:16,000 --> 00:18:20,000
Yeah, that's what I'm talking about.

274
00:18:20,000 --> 00:18:27,000
Because the myth is that drifting through every turn is the fastest way to drive.

275
00:18:27,000 --> 00:18:30,000
Oh yeah, that's it.

276
00:18:30,000 --> 00:18:31,000
But is it?

277
00:18:31,000 --> 00:18:36,000
There comes the finish line.

278
00:18:36,000 --> 00:18:37,000
How did I do there?

279
00:18:37,000 --> 00:18:38,000
224.

280
00:18:38,000 --> 00:18:44,000
224? That's almost identical to your time.

281
00:18:44,000 --> 00:18:46,000
All right, I'm going to try again.

282
00:18:46,000 --> 00:18:47,000
Okay.

283
00:18:53,000 --> 00:18:54,000
Yes.

284
00:18:54,000 --> 00:18:59,000
For his second and final lap, Adam again puts pedal to the metal.

285
00:18:59,000 --> 00:19:06,000
Yeah, this is freaking live.

286
00:19:07,000 --> 00:19:12,000
But this time will be Hammer the Heinemann.

287
00:19:12,000 --> 00:19:14,000
Yeah, that's it.

288
00:19:14,000 --> 00:19:16,000
Yeah, come on.

289
00:19:16,000 --> 00:19:27,000
Or will this myth be done and dusted?

290
00:19:27,000 --> 00:19:29,000
That felt so good.

291
00:19:29,000 --> 00:19:31,000
That felt so awesome. How did I do?

292
00:19:31,000 --> 00:19:33,000
223.

293
00:19:33,000 --> 00:19:39,000
No way. That is awesome.

294
00:19:39,000 --> 00:19:42,000
All right, so after kicking up all that dust, where do we stand?

295
00:19:42,000 --> 00:19:47,000
Jamie's best time driving this course without drifting, two minutes, 22 seconds.

296
00:19:47,000 --> 00:19:54,000
My best time driving this course drifting to heck and back, two minutes, 23 seconds.

297
00:19:54,000 --> 00:19:57,000
They are functionally identical times.

298
00:19:57,000 --> 00:20:03,000
Yep, overall the two times from two equally skilled drivers were statistically the same.

299
00:20:03,000 --> 00:20:10,000
But closer inspection of the footage reveals a wrinkle.

300
00:20:10,000 --> 00:20:15,000
So over the entire course, Jamie's and my lap times were identical, but check this out.

301
00:20:15,000 --> 00:20:20,000
On this gentle turn, we've superimposed Jamie's driving car and my drifting car.

302
00:20:20,000 --> 00:20:25,000
And as you can see, Jamie makes the turn faster because I lose traction in the drift.

303
00:20:25,000 --> 00:20:27,000
But now look at the sharp turn.

304
00:20:27,000 --> 00:20:31,000
Here, I'm faster because I don't lose as much momentum.

305
00:20:31,000 --> 00:20:36,000
So yes, there are occasions when drifting on dirt is quicker, but the idea that it's always quicker,

306
00:20:36,000 --> 00:20:43,000
no matter what, which is what we're testing, well, I guess that's for the wrap up.

307
00:20:43,000 --> 00:20:47,000
So once upon a time, there was a myth that drifting was faster than driving,

308
00:20:47,000 --> 00:20:51,000
and we tested this on asphalt and found it to be busted.

309
00:20:51,000 --> 00:20:55,000
But fans gave us a new myth they said drifting is faster than driving.

310
00:20:55,000 --> 00:20:59,000
If the surface that you're driving on is actually dirt like this, we have tested it.

311
00:20:59,000 --> 00:21:00,000
What have we found?

312
00:21:00,000 --> 00:21:01,000
Busted.

313
00:21:01,000 --> 00:21:04,000
Let's get out of here, preferably without too much drifting.

314
00:21:10,000 --> 00:21:11,000
Still to come.

315
00:21:11,000 --> 00:21:13,000
I love these robotic fish.

316
00:21:13,000 --> 00:21:15,000
There's fish in the firing line.

317
00:21:17,000 --> 00:21:19,000
And a boom with a view.

318
00:21:21,000 --> 00:21:31,000
In this final season special, what's next?

319
00:21:31,000 --> 00:21:34,000
So I understand we're ending with a bang.

320
00:21:34,000 --> 00:21:39,000
Yes, it's time to cue the explosions with a return to what is bomb proof.

321
00:21:39,000 --> 00:21:43,000
We've tested this in the past, and fans didn't say we got any specific test wrong.

322
00:21:43,000 --> 00:21:46,000
Instead, they have a brand new twist on this, which I love.

323
00:21:46,000 --> 00:21:51,000
They claim that the best protection against a bomb is another bomb,

324
00:21:51,000 --> 00:21:56,000
specifically that if two explosions that are identical in size go off simultaneously,

325
00:21:56,000 --> 00:21:59,000
their shock waves will cancel out where they meet.

326
00:21:59,000 --> 00:22:02,000
And if you're standing in that location, you'll be totally fine.

327
00:22:02,000 --> 00:22:03,000
Good story.

328
00:22:03,000 --> 00:22:04,000
I thought so.

329
00:22:04,000 --> 00:22:05,000
It's time to blow some stuff up.

330
00:22:05,000 --> 00:22:06,000
One.

331
00:22:08,000 --> 00:22:10,000
What is bomb proof?

332
00:22:12,000 --> 00:22:14,000
You're not first, we're good.

333
00:22:14,000 --> 00:22:17,000
Has been a fan favorite for years.

334
00:22:20,000 --> 00:22:22,000
So no final season revisit.

335
00:22:23,000 --> 00:22:26,000
We'd be complete without a bomb proof kaboom.

336
00:22:38,000 --> 00:22:40,000
My favorite place to blow stuff up.

337
00:22:40,000 --> 00:22:41,000
Mine too. Let's get set up.

338
00:22:42,000 --> 00:22:45,000
Now to test this myth about explosive cancellation,

339
00:22:45,000 --> 00:22:49,000
we could have just gone to the bomb range and set off two blasts without much fuss.

340
00:22:49,000 --> 00:22:54,000
But instead, we've come back to I own, and that's because we want to do the test above water.

341
00:22:54,000 --> 00:22:55,000
Why?

342
00:22:55,000 --> 00:22:57,000
Well, this myth is all about shock waves.

343
00:22:57,000 --> 00:23:00,000
And we found in an earlier experiment.

344
00:23:00,000 --> 00:23:01,000
One.

345
00:23:02,000 --> 00:23:06,000
That explosions above water give you a great visual image of the shock wave.

346
00:23:06,000 --> 00:23:09,000
Not only is the shock wave itself more visible in the air,

347
00:23:09,000 --> 00:23:13,000
but it also leaves a really clear pattern in the water.

348
00:23:14,000 --> 00:23:17,000
Not only should the lake showcase the shock wave,

349
00:23:17,000 --> 00:23:21,000
it's also good for picturing the two boom plan.

350
00:23:21,000 --> 00:23:27,000
Now soon enough in this episode, you are going to get to see some absolutely gorgeous high speed shots

351
00:23:27,000 --> 00:23:32,000
of the blast pressure waves from an explosion moving outwards across this beautiful lake.

352
00:23:32,000 --> 00:23:36,000
But until then, let me use these stones to tell you what we're going to see.

353
00:23:36,000 --> 00:23:39,000
The first explosion will be a single five pound blast,

354
00:23:39,000 --> 00:23:43,000
and we'll get to see the blast pressure wave move out from that like this.

355
00:23:44,000 --> 00:23:46,000
See those ripples moving outwards from where I dropped the pebble?

356
00:23:46,000 --> 00:23:48,000
That equates to our blast pressure wave.

357
00:23:48,000 --> 00:23:52,000
And our pressure transducers will be reading the intensity of that pressure front

358
00:23:52,000 --> 00:23:55,000
as it moves away from the epicenter of the explosion.

359
00:23:55,000 --> 00:23:59,000
Once we have that data in hand, it will be time to do two simultaneous explosions,

360
00:23:59,000 --> 00:24:02,000
symbolized by these two rocks.

361
00:24:03,000 --> 00:24:07,000
Now watch as their ripples move towards each other and then collide.

362
00:24:07,000 --> 00:24:12,000
It's that collision of the two blast pressure waves that we are going to be looking at the data.

363
00:24:12,000 --> 00:24:19,000
If this myth is true, we should see a significant drop in the intensity of those pressure fronts when they meet.

364
00:24:19,000 --> 00:24:25,000
Well, to find out, Jamie's replacing the rocks with something altogether more dangerous.

365
00:24:25,000 --> 00:24:27,000
So these are our explosives.

366
00:24:27,000 --> 00:24:32,000
That's five pounds of TNT, and these are our floating platforms.

367
00:24:32,000 --> 00:24:36,000
With a hole right in the middle, there will be a rod that comes up three feet.

368
00:24:36,000 --> 00:24:38,000
That sits on top of it.

369
00:24:38,000 --> 00:24:39,000
Bob's your uncle.

370
00:24:40,000 --> 00:24:49,000
Meanwhile, Adam's building the data collection device upon which the whole experiment depends.

371
00:24:49,000 --> 00:24:54,000
So first up, I'm making an a-foot by one-foot platform that will float on the surface of the lake.

372
00:24:55,000 --> 00:25:01,000
Then I'm going to drill seven holes at one-foot intervals across the length of the platform.

373
00:25:01,000 --> 00:25:03,000
Another good use for a cowboy hat.

374
00:25:03,000 --> 00:25:08,000
Into each of those holes, I am putting a six-foot length of schedule 40 pipe.

375
00:25:08,000 --> 00:25:09,000
Awesome.

376
00:25:09,000 --> 00:25:16,000
At the very top of each piece of pipe will sit pressure transducers, which will measure the exact last pressure of our explosions.

377
00:25:16,000 --> 00:25:17,000
One down.

378
00:25:17,000 --> 00:25:25,000
Attached to each of the transducers is a wire that will emerge from the pipes carrying some lovely pieces of data for us to analyze.

379
00:25:25,000 --> 00:25:28,000
So the rig is certainly complex.

380
00:25:30,000 --> 00:25:31,000
I think we're fine.

381
00:25:31,000 --> 00:25:34,000
But its job is surprisingly simple.

382
00:25:34,000 --> 00:25:39,000
Once in position on the water, the guys will set off a single blast.

383
00:25:39,000 --> 00:25:47,000
The rig 7 PCB transducers will then record baseline pressure readings as the blast wave passes by.

384
00:25:47,000 --> 00:26:00,000
Next comes blast 2, an identical double explosion, where the rig will help reveal if the pressure readings where the two waves meet goes up, down, or sees no change at all.

385
00:26:02,000 --> 00:26:03,000
We're on the move.

386
00:26:03,000 --> 00:26:06,000
Add with the assembly at last ready to roll.

387
00:26:06,000 --> 00:26:07,000
Cool.

388
00:26:07,000 --> 00:26:11,000
The guys must next position it in the lake for the single blast control.

389
00:26:11,000 --> 00:26:14,000
A procedure that's a very delicate operation.

390
00:26:15,000 --> 00:26:16,000
Well that was interesting.

391
00:26:16,000 --> 00:26:21,000
Jamie and I are out setting up for the first experiment when all of a sudden the wind picks up.

392
00:26:21,000 --> 00:26:23,000
Oh for f***.

393
00:26:26,000 --> 00:26:30,000
We actually turned out to have gotten caught in a little tiny tornado.

394
00:26:31,000 --> 00:26:32,000
You alright?

395
00:26:32,000 --> 00:26:33,000
Yeah.

396
00:26:33,000 --> 00:26:34,000
That was...

397
00:26:34,000 --> 00:26:37,000
Oh! Felt like being smacked with a ton of bricks.

398
00:26:37,000 --> 00:26:41,000
All of a sudden I knew my hat was almost blowing off. Jamie's hat was blowing off.

399
00:26:41,000 --> 00:26:45,000
I've never seen that happen here since we've all the time we've been coming here.

400
00:26:45,000 --> 00:26:47,000
Yeah. That was weird.

401
00:26:48,000 --> 00:26:54,000
It's not what such a delicate operation needed, but it's not long before the rig is in place.

402
00:26:54,000 --> 00:26:55,000
It'll float.

403
00:26:58,000 --> 00:26:59,000
Cool.

404
00:26:59,000 --> 00:27:01,000
Next it's joined by the controls explosive.

405
00:27:01,000 --> 00:27:07,000
Five pounds of TNT positioned three feet above the water and five feet from the end of the rig.

406
00:27:07,000 --> 00:27:09,000
Awesome. Awesome.

407
00:27:09,000 --> 00:27:12,000
And with that it's time for the single boom benchmark.

408
00:27:14,000 --> 00:27:20,000
Fire in the hole! Fire in the hole! Fire in the hole!

409
00:27:21,000 --> 00:27:23,000
Alright. Here we go. This is for real.

410
00:27:23,000 --> 00:27:30,000
Control explosion five pounds in three, two, one.

411
00:27:32,000 --> 00:27:33,000
Whoa!

412
00:27:34,000 --> 00:27:36,000
That was a crack!

413
00:27:36,000 --> 00:27:37,000
Yes.

414
00:27:42,000 --> 00:27:43,000
Dude!

415
00:27:44,000 --> 00:27:46,000
Well the sensor platform is still there.

416
00:27:46,000 --> 00:27:48,000
And our drone is still flying.

417
00:27:50,000 --> 00:27:52,000
That was intense.

418
00:27:54,000 --> 00:28:02,000
As far as control blasts go, that was as neat as you please.

419
00:28:03,000 --> 00:28:12,000
I don't mean neat in terms of tidy because no, Jamie is actually out there picking up the big chunks of EPP we left out there.

420
00:28:12,000 --> 00:28:15,000
But the explosion went off perfectly.

421
00:28:17,000 --> 00:28:21,000
And we got beautiful data from all seven of our sensors.

422
00:28:21,000 --> 00:28:23,000
That was awesome.

423
00:28:30,000 --> 00:28:33,000
In this final season, retro revisit.

424
00:28:34,000 --> 00:28:38,000
Adam and Jamie have confirmed that a lighter can stop a slug.

425
00:28:39,000 --> 00:28:40,000
Hey dude!

426
00:28:40,000 --> 00:28:42,000
But the shooting ain't done yet.

427
00:28:44,000 --> 00:28:50,000
Next up on What is Bulletproof, an often requested fan favorite that we somehow haven't gotten to yet, but that ends today.

428
00:28:50,000 --> 00:28:51,000
Here is the story.

429
00:28:51,000 --> 00:29:02,000
A man supposedly survived a point blank shotgun blast thanks to a 30 gallon fish tank positioned directly in between him and the shooter, which completely stopped the round.

430
00:29:02,000 --> 00:29:09,000
Now we don't know what kind of round was fired at the fish tank, so we're going to have to fire more than one. Get ready.

431
00:29:09,000 --> 00:29:11,000
Things are about to get fishy.

432
00:29:11,000 --> 00:29:16,000
Stand by for the guys last ever. What is Bulletproof Revisit?

433
00:29:16,000 --> 00:29:17,000
Awesome.

434
00:29:17,000 --> 00:29:19,000
Reason enough for Adam to go to town.

435
00:29:20,000 --> 00:29:24,000
Now just because we're going to shoot our fish tank doesn't mean we can't make it look nice.

436
00:29:24,000 --> 00:29:26,000
I'm going to do a little bit of interior decorating.

437
00:29:26,000 --> 00:29:28,000
First up, some grack.

438
00:29:29,000 --> 00:29:31,000
It's beautiful!

439
00:29:31,000 --> 00:29:34,000
Adam's following that Mythbusters mantra.

440
00:29:34,000 --> 00:29:35,000
I love it.

441
00:29:35,000 --> 00:29:39,000
That if it's worth doing, look, it's totally working.

442
00:29:39,000 --> 00:29:41,000
It's worth overdoing.

443
00:29:41,000 --> 00:29:45,000
Meanwhile, Jamie's got the big gun.

444
00:29:45,000 --> 00:29:50,000
This gun right here is what this story is about. It's standard 12 gauge pump action shotgun.

445
00:29:50,000 --> 00:29:54,000
Now we're going to be running three separate experiments with three separate types of rounds.

446
00:29:54,000 --> 00:29:58,000
Bird shot, buck shot, and a deer slope.

447
00:29:58,000 --> 00:30:03,000
Because the guys like to end with a bang, they're starting with the least energetic round.

448
00:30:03,000 --> 00:30:07,000
The bird shot, which will be fired by Adam.

449
00:30:07,000 --> 00:30:10,000
Okay, here we go. The classic battle.

450
00:30:10,000 --> 00:30:13,000
Bird shot versus fish tank.

451
00:30:13,000 --> 00:30:16,000
And three, two, one.

452
00:30:20,000 --> 00:30:25,000
Well, I'll tell you on the next shot, I am going to wear sleeves because a bunch of stuff hit me.

453
00:30:25,000 --> 00:30:27,000
Yeah, I got a little mark there.

454
00:30:27,000 --> 00:30:30,000
Ironically, Adam's been hit.

455
00:30:30,000 --> 00:30:33,000
But Buster's not.

456
00:30:33,000 --> 00:30:36,000
Looks like he was safer than you were.

457
00:30:37,000 --> 00:30:42,000
The dummy is completely injury-free and the high speed shows why.

458
00:30:44,000 --> 00:30:49,000
So check this out. The bird shot blasts into the tank at 1300 feet per second.

459
00:30:49,000 --> 00:30:56,000
But because each pellet weighs less than one gram, they're stopped by the water before they hit the back glass.

460
00:30:56,000 --> 00:31:02,000
That glass only breaks because of the shock wave caused by the blast itself.

461
00:31:04,000 --> 00:31:11,000
Meaning that Adam and the fish really did get more hurt than Buster.

462
00:31:13,000 --> 00:31:18,000
But with a brand new 30 gallon tank set up just like before.

463
00:31:18,000 --> 00:31:21,000
Here you go, my prettys. I love these robotic fish.

464
00:31:21,000 --> 00:31:28,000
Will Buster be saved again when facing off against bird shots bigger brother?

465
00:31:28,000 --> 00:31:30,000
So what's going to happen with buckshot?

466
00:31:30,000 --> 00:31:35,000
Well, the lead pellets that are inside buckshot are the size of a 9mm round.

467
00:31:35,000 --> 00:31:40,000
So for my money, it's going to make it all the way through the tank and it may well actually penetrate our dummy.

468
00:31:40,000 --> 00:31:44,000
Well, with Jamie dressed to kill, it's time to find out.

469
00:31:45,000 --> 00:31:49,000
Fireing in three, two, one.

470
00:31:52,000 --> 00:31:54,000
The back glass didn't even shatter.

471
00:31:56,000 --> 00:32:00,000
I don't even need to walk over there to tell that our guy's okay.

472
00:32:01,000 --> 00:32:09,000
Despite each pellet having more than 12 times the energy of bird shot, Buster's even more safe.

473
00:32:09,000 --> 00:32:11,000
And Adam has a theory as to why.

474
00:32:12,000 --> 00:32:17,000
How is it possible that our buckshot didn't even get through the back of our fish tank?

475
00:32:17,000 --> 00:32:19,000
I have a little bit of an explanation for this.

476
00:32:20,000 --> 00:32:21,000
What is ammunition designed to do?

477
00:32:21,000 --> 00:32:23,000
It's designed to harm flesh.

478
00:32:23,000 --> 00:32:25,000
And what is flesh made of?

479
00:32:25,000 --> 00:32:28,000
Well, it's a bit of gristle but mostly water.

480
00:32:28,000 --> 00:32:33,000
And water resists an impact in direct proportion to the speed of that impact.

481
00:32:33,000 --> 00:32:36,000
Faster the impact, faster water repels that energy.

482
00:32:36,000 --> 00:32:42,000
And that's why our buckshot loses almost all of its energy in the 12 inches of our fish tank.

483
00:32:42,000 --> 00:32:43,000
But we're not done yet.

484
00:32:43,000 --> 00:32:45,000
We have one more type of ammo to try.

485
00:32:47,000 --> 00:32:53,000
Yep, for the third and final test, it's the big daddy, the Deerslug.

486
00:32:53,000 --> 00:32:56,000
But will this be stopped even quicker again?

487
00:32:56,000 --> 00:32:58,000
All right, here we go.

488
00:32:58,000 --> 00:33:03,000
This is Deerslug versus fish tank, the final chapter.

489
00:33:03,000 --> 00:33:07,000
Safety's off, range is hot.

490
00:33:09,000 --> 00:33:12,000
And three, two, one.

491
00:33:15,000 --> 00:33:19,000
All the way through.

492
00:33:19,000 --> 00:33:24,000
It's clear that this test caused way more carnage than the buckshot.

493
00:33:24,000 --> 00:33:29,000
But with no sign of the slug in the tank or in buster...

494
00:33:30,000 --> 00:33:33,000
I don't see a slug in him.

495
00:33:33,000 --> 00:33:38,000
It's down to the spectacular high speeds to sort out the science.

496
00:33:38,000 --> 00:33:41,000
So I fired the Deerslug at the fish tank.

497
00:33:41,000 --> 00:33:43,000
And just like the other two types of ammo from the shotgun,

498
00:33:43,000 --> 00:33:48,000
the initial impact created this magnificent shockwave inside the fish tank.

499
00:33:51,000 --> 00:33:58,000
But uniquely among the three, the Deerslug not only broke but also pierced the back glass of our fish tank.

500
00:33:59,000 --> 00:34:06,000
But it's pretty clear on the high speed that as it does, it loses whatever remaining energy it had

501
00:34:06,000 --> 00:34:10,000
and then starts to move downwards instead of towards our ballistics gel dude.

502
00:34:10,000 --> 00:34:19,000
So I think based on this, we've got to conclude that the slug also does not make it true a fish tank in any lethal fashion.

503
00:34:19,000 --> 00:34:25,000
And that's a conclusion that's even more concrete when Jamie does find the slug.

504
00:34:25,000 --> 00:34:29,000
Found it. This is that bullet after it hit.

505
00:34:29,000 --> 00:34:36,000
It spread it in this case flat as pancake and that sort of meant that it was like a drag shoot on that bullet as it moved through the water.

506
00:34:36,000 --> 00:34:41,000
It did break through the other side of the tank, but really only just.

507
00:34:41,000 --> 00:34:58,000
Alright, time to tally up the results. What is bullet proof fish tanks?

508
00:34:58,000 --> 00:35:01,000
Did we prove that they're in fact bullet proof?

509
00:35:01,000 --> 00:35:04,000
If we're talking about shotguns, pretty much.

510
00:35:04,000 --> 00:35:06,000
Totally astonishing too I might add.

511
00:35:06,000 --> 00:35:07,000
Let's get out of here.

512
00:35:07,000 --> 00:35:08,000
Alright.

513
00:35:09,000 --> 00:35:12,000
Next in what is bomb proof?

514
00:35:12,000 --> 00:35:18,000
Will there be fire in the hole in three, two, one.

515
00:35:23,000 --> 00:35:28,000
After 14 years of guns and ammo, here's the final season shooting stats.

516
00:35:31,000 --> 00:35:36,000
Since 2002, the myth busters have shot over 40 types of gun.

517
00:35:39,000 --> 00:35:43,000
And fired more than half a million bullets.

518
00:35:48,000 --> 00:35:51,000
They've revisited what is bullet proof six times.

519
00:35:51,000 --> 00:35:54,000
Another reason to have pepperoni pizza.

520
00:35:56,000 --> 00:36:00,000
And proved once that Walter White was right.

521
00:36:00,000 --> 00:36:02,000
That was an adrenaline rush.

522
00:36:09,000 --> 00:36:11,000
One.

523
00:36:11,000 --> 00:36:13,000
Whoa.

524
00:36:13,000 --> 00:36:17,000
Adam and Jamie are ending their final ever revisit.

525
00:36:17,000 --> 00:36:18,000
That was a crack.

526
00:36:18,000 --> 00:36:20,000
With a bang.

527
00:36:21,000 --> 00:36:28,000
They're testing whether two simultaneous explosions of the same size can really cancel each other out.

528
00:36:28,000 --> 00:36:32,000
And after test one, the control data is in.

529
00:36:32,000 --> 00:36:34,000
So the data was clean.

530
00:36:34,000 --> 00:36:37,000
The nearest sensor showed 135 psi.

531
00:36:37,000 --> 00:36:41,000
And it evenly lowered to the last sensor at 25 psi.

532
00:36:41,000 --> 00:36:47,000
Now for the next test, instead of one blast, we're going to have two blasts on opposite sides.

533
00:36:47,000 --> 00:36:50,000
Going off at exactly the same time, the same distance.

534
00:36:50,000 --> 00:36:54,000
And those numbers, those pressure readings will change.

535
00:36:54,000 --> 00:36:56,000
How exactly we don't know.

536
00:36:56,000 --> 00:36:59,000
They could go down, they could go up, they could cancel each other out.

537
00:36:59,000 --> 00:37:01,000
But that's what we're looking for.

538
00:37:01,000 --> 00:37:05,000
To find out the guy salvage what they can from test one.

539
00:37:05,000 --> 00:37:06,000
Three.

540
00:37:06,000 --> 00:37:07,000
Four.

541
00:37:07,000 --> 00:37:08,000
That's good.

542
00:37:08,000 --> 00:37:09,000
Awesome.

543
00:37:09,000 --> 00:37:12,000
I love that we don't have to replace this.

544
00:37:12,000 --> 00:37:14,000
And begin to set up for test two.

545
00:37:14,000 --> 00:37:15,000
Good.

546
00:37:15,000 --> 00:37:18,000
But Adam's already got concerns.

547
00:37:18,000 --> 00:37:22,000
Look, we often make a joke on this show that failure is always an option.

548
00:37:22,000 --> 00:37:26,000
In this case, for this experiment, it's not.

549
00:37:26,000 --> 00:37:27,000
And allow me to explain.

550
00:37:27,000 --> 00:37:32,000
When we say failure is always an option, we're actually explaining that we have no bias as to how something turns out.

551
00:37:32,000 --> 00:37:38,000
So what we're really talking about is a failure of our expectations is always an option.

552
00:37:38,000 --> 00:37:41,000
Any result to result, that's for sure.

553
00:37:41,000 --> 00:37:44,000
But we can't survive a failure of our methodology.

554
00:37:44,000 --> 00:37:47,000
And in this case, the methodology for this experiment is everything.

555
00:37:47,000 --> 00:37:54,000
We have to have those two explosives go off simultaneously and perfectly equidistant from the center sensor

556
00:37:54,000 --> 00:37:57,000
in order to get the reading that we're looking for.

557
00:37:57,000 --> 00:38:02,000
If we don't get that, it's going to be a heavy-duty reset to try and get it again.

558
00:38:02,000 --> 00:38:09,000
To try to get two identical booms, the guys are using exactly the same quantity of explosive

559
00:38:09,000 --> 00:38:13,000
that's positioned perfectly equidistant from their data rig.

560
00:38:13,000 --> 00:38:19,000
And by using exactly the same length of detonation tube, they're leaving nothing to chance.

561
00:38:19,000 --> 00:38:22,000
Fire in the hole!

562
00:38:22,000 --> 00:38:25,000
But will that be enough?

563
00:38:25,000 --> 00:38:33,000
Okay, double explosion in three, two, one, go!

564
00:38:42,000 --> 00:38:43,000
Well, that was a bit of a cold shower.

565
00:38:43,000 --> 00:38:45,000
I pushed the button and nothing happened.

566
00:38:45,000 --> 00:38:46,000
Well, almost nothing.

567
00:38:46,000 --> 00:38:51,000
Actually, I did watch the spark travel down the tube, but when it got to the water's edge, it stopped,

568
00:38:51,000 --> 00:38:53,000
which means that we may have gotten some water.

569
00:38:53,000 --> 00:38:59,000
But what it really means, what it really means is that somebody owes us a case of beer,

570
00:38:59,000 --> 00:39:02,000
because that's what that means in the bomb world.

571
00:39:02,000 --> 00:39:08,000
Rules aside, the guys quickly replace the detonation tube, and then it's good for take two.

572
00:39:08,000 --> 00:39:11,000
Okay, here we go. Count it in, Mr. Heidemann.

573
00:39:11,000 --> 00:39:14,000
Okay, two blasts cancelling each other out.

574
00:39:14,000 --> 00:39:21,000
Maybe in three, two, one.

575
00:39:22,000 --> 00:39:23,000
Wow.

576
00:39:27,000 --> 00:39:28,000
I felt that one.

577
00:39:28,000 --> 00:39:31,000
That was a bone rattle.

578
00:39:33,000 --> 00:39:35,000
Holy ****.

579
00:39:36,000 --> 00:39:41,000
In real time, it's impossible to see if the experiment was a success.

580
00:39:41,000 --> 00:39:44,000
But the high speed shows it was exactly that.

581
00:39:52,000 --> 00:39:54,000
This is really, really beautiful.

582
00:39:54,000 --> 00:39:58,000
First of all, this camera angle is shooting at 4,000 frames per second.

583
00:40:00,000 --> 00:40:04,000
And you can actually see here from one frame to the next, boom.

584
00:40:04,000 --> 00:40:06,000
It's a perfectly simultaneous explosion.

585
00:40:06,000 --> 00:40:08,000
That's exactly what we were looking at.

586
00:40:08,000 --> 00:40:11,000
Now there's some cool stuff as you advance through the frames.

587
00:40:11,000 --> 00:40:15,000
You can start to see the actual shock waves there, these two bubbles.

588
00:40:15,000 --> 00:40:23,000
And as they increase, the gray line here above the water, you can actually see the cross of the two bubbles intersecting.

589
00:40:23,000 --> 00:40:27,000
We have sensors in place that will tell us what's actually happening there.

590
00:40:27,000 --> 00:40:30,000
Is it increasing the power? Is it decreasing the power?

591
00:40:30,000 --> 00:40:32,000
I honestly have no idea.

592
00:40:32,000 --> 00:40:35,000
And I might be over excited because I was just rattled by an explosion.

593
00:40:38,000 --> 00:40:40,000
But I think this is pretty awesome.

594
00:40:42,000 --> 00:40:44,000
Well, the good news is that the sensors survived.

595
00:40:44,000 --> 00:40:45,000
Got the data.

596
00:40:45,000 --> 00:40:46,000
You did?

597
00:40:46,000 --> 00:40:47,000
Got it.

598
00:40:47,000 --> 00:40:48,000
Dude, that's awesome.

599
00:40:49,000 --> 00:40:52,000
And once dissected, Adam's ready to divulge.

600
00:40:54,000 --> 00:40:59,000
All right, Mr. Heidemann, we have actual data from that last blast and it's beautiful. Do you want to hear it?

601
00:40:59,000 --> 00:41:00,000
Yes.

602
00:41:00,000 --> 00:41:06,000
Okay, so if you remember, right, we had seven sensors to catch the intersection between the two pressure waves.

603
00:41:06,000 --> 00:41:11,000
Remember for the first test, number four read 50 psi.

604
00:41:11,000 --> 00:41:12,000
Okay.

605
00:41:12,000 --> 00:41:14,000
Second test, you will not believe it's reading.

606
00:41:14,000 --> 00:41:15,000
Is it double?

607
00:41:15,000 --> 00:41:17,000
100 psi.

608
00:41:17,000 --> 00:41:18,000
Yes, it was right.

609
00:41:18,000 --> 00:41:20,000
Was that your prediction?

610
00:41:20,000 --> 00:41:22,000
Well, it's two energies and they intersected.

611
00:41:22,000 --> 00:41:24,000
Did you say that on camera?

612
00:41:24,000 --> 00:41:25,000
No.

613
00:41:25,000 --> 00:41:26,000
Oh, well, then it doesn't count.

614
00:41:26,000 --> 00:41:27,000
I said it just now.

615
00:41:27,000 --> 00:41:28,000
I was going to bed.

616
00:41:28,000 --> 00:41:29,000
No, no, no.

617
00:41:29,000 --> 00:41:32,000
He never wants to give a prediction before the actual fact.

618
00:41:32,000 --> 00:41:33,000
Isn't that awesome?

619
00:41:33,000 --> 00:41:34,000
Yeah.

620
00:41:34,000 --> 00:41:36,000
It's totally the opposite of canceling each other out.

621
00:41:36,000 --> 00:41:38,000
It doubled the power.

622
00:41:39,000 --> 00:41:49,000
So we set out to test the myth that two identical explosions set off equidistant from each other would cancel each other out where their pressure waves intersected in the middle.

623
00:41:49,000 --> 00:41:51,000
Now, what we found was the exact opposite.

624
00:41:51,000 --> 00:41:53,000
It actually doubled there.

625
00:41:53,000 --> 00:42:03,000
A lot of physics is not exactly intuitive, but in this case, I think it is because you've got twice the explosive power in the same vicinity right next to each other.

626
00:42:04,000 --> 00:42:08,000
And it's not unlike a couple of hammers hitting.

627
00:42:08,000 --> 00:42:13,000
All that energy impacts right in the middle and that's a bad place to be.

628
00:42:17,000 --> 00:42:19,000
That one's pretty cleanly busted.

629
00:42:19,000 --> 00:42:22,000
Yep, busted with TNT.

630
00:42:22,000 --> 00:42:23,000
My ears are still ringing.

631
00:42:23,000 --> 00:42:25,000
I have hearing protection.