Can a 2 Inch Gun Fire a 1 Inch Bullet? - 300,000FPS - The Slow Mo Guys

Gav and Dan whip out the old pinfire gun and see if it's possible to fire a bullet with a bullet.
See how pinfire fares against centerfire and rimfire at 300,000fps.
DO NOT TRY AT HOME!
Instagram - / theslowmoguys
Tik Tok - / theslowmoguys
Filmed at 300,000FPS with the Phantom TMX 7510
Can a 2 Inch Gun Fire a 1 Inch Bullet? - 300,000FPS - The Slow Mo Guys

[@theslowmoguys]

Pay no attention to these scam accounts using the same name and picture as this account in the comments. Unless "The Slow Mo Guys" is in a bubble with a check/tick mark next to it, it's not us. I will never contact you on any platform with a free gift or any offer like that, as much as I love you. I know most people already know this but I've had a few emails recently where people seem to have fallen for it. Doing my best to ban them from the channel but it's hard to stay on top of all of them. Be safe out there my friends! - Gav

[@Johannesburgus]

First time I've seen a KZbin channel acknowledge this problem that has been going on for quite some time now

[@craigmckenzie4967]

@@Johannesburgus the slow mo guys are just real MVPs

[@Fobes]

Try it with a 12 gauge shell.

[@mrbfros454]

@@CryMoreQT 🤓 Well actually, since it’s a decimal, saying two two is technically more accurate then twenty two. According to my research all Brits say it this way. Sorry, I had to put on my geek glasses for that one…

[@FingerAngle]

Hey would y'all be interested in filming one of my catapults, or trebuchet? Here's a couple of short videos of the catapult I'd like to see in slow motion. It's transonic, but I can get it supersonic. kzbin.info/www/bejne/bX-pZXmei62kppI kzbin.info/www/bejne/mX7bYaSIrN-Nrck

[@TomFawkes]

How much could this be escalated? Like a domino effect of bullets from the tiny round up to a tank shell.

[@gitfoad8032]

10megaton.

[@LexanderMiller]

The most dangerous video. Loose bullets firing bigger, loose bullets

[@rickcimino743]

what a good idea!

[@635574]

I think unless theres another barrel its going to immediately fail.

[@Gizmomaster]

@@LexanderMiller well potentially. As you saw with the 9 mm it was traveling extremely slowly. While it travelled a fair bit it could hardly be considered deadly or even dangerous. For a bullet to be dangerous it needs to be traveling very fast. Though it may simply be impossible for a 9mm bullet to actually hit the primer of say a 10mm cartridge. Would be an interesting experiment. But dangerous? Not as dangerous if these were being fired from out of a chamber and barrel.

[@nicknack125]

That macro shot with the probe lens is absolutely incredible!

[@ITFNBiteBayKon]

Completely! It's one of the best things my eyes has ever seen!

[@hoguemr]

It really was. I'd love to see them explore that more with better lighting and slower frame rates

[@michaelvnuk]

They should have gone and shot at the bullet side too

[@At0mix]

Reminded me of a CGI movie shot

[@mrbfros454]

A very cool reminder of how relatively soft copper is.

[@thebigbadbeanman]

It amazes me that after all these years they continue to make consistently high quality content

[@SuperPhunThyme9]

Yeah even going through the "KZbin Originals" experience somehow couldn't corrupt these two. These are solid men right here.

[@IstherLord]

There's a type of gun that used mini rockets as ammo called Gyrojets, and they are kinda rare and hard to find, so there's precious little videos of them working on youtube, and I haven't been able to find any video with slow motion action, let alone super slow motion. A tiny rocket bullet might be something really fun to see in superslow motion, and I'd like to leave my suggestion for you guys if you think you can get your hands on a gyrojet pistol.

[@IstherLord]

@@carlwheezerofsouls3273 thanks! I will!

[@scottydu81]

@@IstherLord Have you ever heard of the Dardick? A semiauto revolver that used triangular rounds?

[@IstherLord]

@@scottydu81 I haven't but that sounds interesting

[@paulmickle1135]

@@carlwheezerofsouls3273was gonna comment that, OOOOOG KZbin channel

[@Gojiro7]

@@scottydu81 I have, that thing is interesting, but the "Trounds" as the creator calls them, dont hold up to pressure any more because of the plastic like material their made of cant contain the pressure any more and their not something you can casually 3D print replicate in a sturdy enough material, so you likely wont find any footage of them being used

[@braedonrogers5534]

These guys are some of the only OGs of youtube still making stuff. not only that, their content has just gotten better and better

[@JimboJuice]

Cold ones is great

[@Chili.P]

@@JimboJuice _Look at this little egg fella_

[@JimboJuice]

@@Chili.P he's even got a cool hat

[@girlsdrinkfeck]

and they have not resorted to turning woke either to appeal to advertisers demands

[@Chili.P]

@@girlsdrinkfeck Fax, big respect on Max and Chad, they just do what they want to.

[@MolaAlexandrini]

What Gav says at the end about the footage still being surprising, despite expecting it, is spot on! Each and every video, I see the title and can imagine roughly how it's going to look, but I'm then blown away by how much detail and cool stuff there is to look at. Awesome every time, and still getting better 11 years on!

[@TrondBrgeKrokli]

Thank you for writing your comment very much to the point of what I was thinking, but could not exactly put down in my comment. Kudos.

[@SleepyOcto]

@@TrondBrgeKrokli what this guy said.

[@YoyoF37]

13:05 This shot is just unbelievable

[@pasmaan]

I love the genuine curiosity of these guys. It's infectious. Thanks for another piece of quality edutainment.

[@Fitzy258]

That macro shot is probably one of the best clips you've ever recorded. Absolutely incredible

[@dylanmonstrum1538]

Yeah, that was something special. Very unique.

[@GRAITOM]

Just think about how far this specific technology has come in such a short amount of time. It's truly amazing that we are able to capture such insanely fast events and slow them down so we can take in every step it has taken on the way while maintaining such detail. It's just beautiful..

[@VictorFernandes8]

Looks like an intro for a show

[@chrisyewdros4835]

whoa, until you see it 😍

[@Space_Parrot]

Ever since Dan and Gav got back together on camera their ideas have been absolute bangers, that shaped charge video had me chuffed

[@utha2665]

The two years of separation and lockdowns haven't been wasted 👍👍

[@AhHereWeGo]

The “percussion cap” is called a primer, the round thing with the 3 holes is called the anvil. When a gun fires normally, the primer still has the firing pin against it to prevent it coming out, but occasionally you have a primer rupture, and just like here, the powder burns, but the path of least resistance is out the primer pocket

[@jkent9915]

That is exactly what happened. I have heard of this happening but I have never witnessed it.

[@ShaggyRogers1]

There is also the problem of not having an enclosed chamber. Part of the purpose of the barrel in a firearm is to prevent the pressure from blowing the unburnt powder away. With an enclosed chamber + barrel, the powder is still in the enclosed space catching fire. You could probably prevent the primer rupture by using rimfire instead of centerfire, but you would still have the problems of pressure and unburnt powder escaping out the front.

[@AhHereWeGo]

@@ShaggyRogers1 you still get rims popping with rimfire.

[@vaticinus]

Its a shame they did not think to clamp the cartridge a bit so that the bullet could really fly.

[@HECKproductions]

the cartridge would probably explode in that case because there is no firing chamber to prevent that

[@270Winchester]

@@HECKproductions the cartridge won't explode unless it overloaded. It would shoot the bullet or blow out the cap before it exploded.

[@venbrou]

@@270Winchester I'm not so sure... The barrel does a lot to contain the expanding gas, including acting as reinforcement for the shell. With nothing holding it we saw that .22 shell get launched backwards with enough force that hitting the mini gun crumpled it like a soda can. With a backstop that force is limited to just the bullet and the shell walls. The .22 might survive, or it might get a bit of flowering fracturs at the end. I wish they would have tested it, because I'm really not sure what would happen.

[@thealarmclock9307]

It blew the primer

[@vaticinus]

@Ben Dover Its always laughable when people think a bunch of militia with hand held weapons they have a chance against the might of the US military. 😂😂🤣🤣

[@shufflecat3334]

"We're the slowmo guys, still at it" Really hit me in the feels. God I love these guys

[@Gonzakoable]

What happened?

[@HypedBounty]

@@Gonzakoable theyve just been doing this for forever lol, its nice to see them still going

[@ZesPak]

@@Gonzakoable Well, you know, firing bullets at bullets like this, it's sort of a miracle.

[@rejuvenatingsoul3498]

It's nice that they haven't coporiatised with, massive crew and brand pleasing etc, it's still two dudes goofing around with a high speed camera.

[@thepranjaljain]

@@rejuvenatingsoul3498 i love them BECAUSE of it

[@stvlkrddn3114]

We can all agree this is some amazing slow motion footage, but can we take a minute to appreciate Gav's audio design in these videos?! I remember a video some time ago where he explained how he adds most of the audio in these videos and this one is so incredibly satisfying!

[@hushravelle]

the sound as the hammer struck on that delayed shot was one of the coolest things I've ever heard, easily

[@rixxey2048]

I was just thinking this. Is it the actual audio or does he add sound effects?

[@naconaco1]

@@rixxey2048 he adds sound effects and also slows down certain sounds. None of the noises a real in a sense that if you slowed it down that much it wouldn't sound right

[@Starfloofle]

Yeah, seriously; as a hobbyist working with audio on occasion I've a good ear for sound effects and I love that there's other folks out there who appreciate them as much as I do, because holy cow does it make phenomenal difference to presentation haha

[@phineasg7709]

@@rixxey2048 Actual audio slowed down more than ~100X becomes so low pitched that it's beyond the range of human hearing, so they have to add the sound effects in.

[@levitheguy6086]

I like how they probably actually achieved the world record for the shortest distance a bullet has ever been fired and nobody mentions it 😂

[@vtwinner]

many bullets have been fired at shorter distances.... sorry to be morbid, but they press them to the target so they dont miss and only injure themselves....

[@WhaIHuhWhatDoYouMean]

​@@vtwinnerthat would still require the bullet to leave the end of a barrel, at least a few inches. That bullet didn't even leave the casing.

[@vtwinner]

@@WhaIHuhWhatDoYouMean a bullet has not been fired if it hasn't left the casing... it was just nudged.. that one anyway...... the cap was fired... the bullet not so much

[@jeremybree1986]

​@@vtwinner it didn't even fully leave the casing, I think that beats it.

[@vtwinner]

@@jeremybree1986 If it hasn't left the casing, it hasn't been fired, that is called a MIS-fire

[@Ghost_moto_WPN]

It would be interesting to see how far the bullet would go if you could put a backing plate behind it so the shell can’t come back towards the gun, a plate with a hole you’re shooting through to set off the primer. I think a lot of the energy is split sending the casing backwards and the bullet forward, obviously it wouldn’t go as far as a sealed barrel but I wonder if it would go half as far or how much lower the velocity would be.

[@clabrecque1]

I think thats a great idea. I made the same comment. Would be super interesting to see

[@joshuavandalsum447]

The back plate with a hole is a great idea I love that, I had a similar thought. What if the bullet was inside a transparent barrel?(so that you can see the bullet with the camera). Couldn't that make the bullet fly nice and straight out of the barrel since the barrel could act as some kind of chamber where the gas that's expanding keeps trapped inside shooting the bullet out the other way. It could actually shoot the bullet out further perhaps. Connect that barrel to the back plate with the hole and that should keep most of the propellant and gas between the bullet and the inside of the back plate, this could ignite the propellant more creating more gas, shooting the bullet even further! Note on the back plate hole: it should be smaller than the hole created inside the casing after the percussion cap flies out so that the percussion cap also stays inside the barrel with the back plate acting like the back plate, keeping the explosion and gas trapped inside the chamber even more.

[@hermitgreenn]

The little gun doesn't have enough energy to push a firing pin.

[@Joshualacruz]

I appreciate your gun safety Dan, even when the gun is so tiny you could accidentally swallow it, you still take it seriously. Good on you

[@indonesianbassbooster5167]

First rule of tiny gun safety is to point it away from whoever you want not your gun eaten 🤣

[@off6848]

Overly cautious mental illness

[@Sienisota]

I was thinking the same thing. Though this is my first video, so when I saw the tiny gun as they introduced it at the start, my first reflex thought was " Gun! Don't point it to close to your buddy's face! Always treat it as if it's loaded! Wear safety glasses" 😅.

[@Joshualacruz]

@@lukecook9421 didn't seem noteworthy to me. What about it?

[@SirSweeper]

@@lukecook9421 you can call it cap or primer.

[@andreaskerscher235]

I watch these guys for years and years. And still they manage to amaze me. This is one of their best videos!

[@candlestyx8517]

One of the few channels that I haven't gotten bored of

[@wholiansegal8958]

The steel wool was the most satisfying one.

[@hugh.g.rection5906]

finna get dem beans on yo

[@thingsnstuff85]

Probably one of your coolest videos ever!! It’s cool to see what actually goes on when a bullet is lit

[@Twinrehz]

Seems to me like a security feature, having the ignition cap blow out if there's nothing to hold it in place, to ensure that people don't get hurt when they're playing around with these bullets.

[@rokoala2636]

I don't think they are intentionally designed to blow out for safety, it's just that the primers and bullets would be harder to manufacture if they were crimped in place more securely

[@paullockyer7230]

@@rokoala2636 I'm not sure it's universal, but some military ammo does have the primer crimped in.

[@Ni999]

​@@paullockyer7230 I would say it's probably more common than not for military ammo fwiw. Last thing you want is loose primer cases floating around the innards during an engagement.

[@Ni999]

Twinrehz - primers are crimped in when the application calls for high reliability. They protect the gun not people playing around doing wrong things wrongly.

[@rokoala2636]

@@paullockyer7230 yeah true, I was more meaning crimped in securely enough to affect the proposed 'safety feature' of having them blow out. I reckon that would need a decent change to the primer and crimping compared to how they do it for military ammo.

[@ventureswithjoe1776]

I like how they actually discuss what they think happened and pretty knowledgeably as well instead of just scripting an answer to give us. They take us on the journey as they learn which is what I really enjoy.

[@chrisjdecola]

Physics is a beautiful thing to learn!

[@user-fw6ks8jm3s]

POV: your listing without sound

[@YaraUwU]

Well Dan is an ammunition technician and explosives expert.

[@Bendigo1]

This is actually a pretty good example of mass and inertia. Since the casing has much less if it is not restrained, the casing actually becomes the projectile while the bullet just kind of wanders away.

[@hellomark1]

Especially with the 9mm, you really need the firing pin to hold the primer bit in place, never occurred to me

[@lperkins2]

The shell will actually expand slightly inside the chamber, which makes it friction fit and fire form to the inside of the chamber. This is why ejecting spent rounds is more difficult than expecting unfired rounds (and why part of the reloading process involves recompressing the shell to its original size). If you oil the shell, you can damage some of the weaker actions because the shell becomes a projectile that slams into the back of the action.

[@douglasboyle6544]

I love how with the .22 the Bullet seems to hover there for a moment while the casing flies backward because it takes longer to overcome its inertia.

[@reidprichard]

Demonstrates the law of conservation of momentum, to be precise. The bullet's mass times its velocity will be equal to the casing's mass times its velocity; since the bullet is much more massive, the casing will have a much greater velocity.

[@ikwer111]

The primer does it all. The primer compound ignites, builds up enough pressure to push itself out of the primer pocket, which it can as it is not held in by a breech (Nothing to do with a firing pin). Occasionally there is enough pressure generated by the primer to move the bullet forward and the case backward, but never enough heat and pressure in the case to ignite the smokeless powder, as this needs both do that and to build up pressure. Smokeless powder is hard to ignite. Try it again with black powder as a propellant....Even in a firearm it is, by choosing the wrong combination of primer, smokeless powder and bullet-case friction possible to have a failure to ignite the powder in which the bullet just moves a little on primer pressure alone. Enlarging the confined space the powder is in, making it even harder to ignite. That js the reason why we have normal primers and magnum primers that generate more heat and pressure. So Thats why the primer pressure in the case just blows out the unburnt powder through the flash hole. The rimfire is different. No separate primer that can blow out and release the pressure, very finely granulated smokeless powder that is easier to ignite and burns faster, and this generates the heat and pressure to move the case (the primer) back and the bullet a little forward.

[@havocgear8143]

Its because the hammer usually stays up against the cap, the tiny bullet bounces away so the force can go both ways

[@vtwinner]

hammers hit pins that hit caps in a gun... most pins are pretty tight, much smaller than the casing and leave a centered punch in the cap...

[@ShaggyRogers1]

@@vtwinner and what does that have to do with anything? The point havocgear made is that one of the purposes of the firing pin being fixed forward after shooting is that it holds the primer in place. By holding the primer in place, the forces of the explosion are instead directed to the least path of resistance. The path of least resistance being the projectile that is only held in place within the cartridge by friction.

[@vtwinner]

@@ShaggyRogers1 its not fixed forward... the bullet is held by its rim in the breach, not by the PIN...

[@ShaggyRogers1]

@@vtwinner The pin holds the primer, you dingus. You see that little cylinder that keeps flying out the back of the round in the video? That's the primer.

[@garyr7027]

What amazes me more is the FPS speed. That's just freakin insane, and really cool to watch.

[@DarkSrake]

That macro shot is so surreal it looks like an animated scene. Like a bulkhead in a cosmic sandstorm

[@arindas8357]

That was a fraud be aware

[@DoggosGames]

@@arindas8357 Okay, i'll arrest you then.

[@arindas8357]

😅

[@reprep8423]

I thought the little sparks were neat looked like sum from star wars

[@redacted5657]

Thousandth like

[@PlasmaChannel]

That shot of the 22lr brought back memories. When I was younger and less careful, I decided to shock a 22lr with a big capacitor. It set the bullet off, and the casing and bullet flew in opposite directions. However, the casing flew with such speed that it ripped a line through the top of my finger, and I was convinced I was going to lose my finger. Luckily it was just a mere flesh wound. Those casings can cause serious damage!

[@fatonisodiq9341]

yes, need more savety

[@DrunkJarJar]

Tis' BUT A SCRATCH

[@arizonaballistics]

I had a similar experience smacking a 12 gauge shell capped off on a coffee table it threw the percussion cap through my hand, I didn’t realize because it happened so fast until I started seeing drops of blood

[@SDSypher]

@@arizonaballistics bruh

[@moos5221]

@@arizonaballistics like literally through your hand?

[@westonforced-last-name-dis3560]

I love Dan spilling knowledge

[@tobyncummins]

These guys are insane geniuses to pioneer this concept for KZbin.

[@wilabanodeniro9780]

Literally just use a slow mo camera. It’s hardly genius

[@ericssmith2014]

The probe lens shot was fantastic: the lighting, the sense of speed from the cloud of gas spraying by, the way you can follow each step of what happens...

[@haydenweir6416]

That macro shot with the probe lens might just be the single best shot you two have ever done. Truly breathtaking

[@Hrochnick]

My jaw literally dropped...

[@GRAITOM]

It's actually nearly unbelievable how far slow motion technology has come in such a ridiculously short amount of time!

[@ariesb2b]

it was like a movie scene suddenly in a middle of a dessert.

[@isigo]

True!

[@slum_dogz]

This is hands down ONE OF THE BEST VIDEOS ever uploaded on KZbin.

[@DriftersDiesel]

Incredible video as always guys. Been following for over a decade and this is exactly why I stay, quality content.

[@ODST_Parker]

As someone who loves the engineering and physics involved in firearms just as much as actually using them, I find this absolutely fascinating. I've never actually considered what might happen to a round if ignited without the containment of the chamber and barrel. That was more epic than I would've imagined, every result of that was interesting in a different way. The tiny bits igniting and propelling the other bits out in two separate streams, the percussion cap flying back and the case separating from the bullet at nearly the same speed, the rimfire actually firing with enough force to dent the case and propel the bullet. Absolutely amazing, thanks for that one guys.

[@Hawk7886]

Many people perform this experiment by lobbing some 22lr rounds into a fire while partying.

[@res1492]

@@Hawk7886 Yeah ...22lr?....My brother and i tried this, its not as much fun when using artillery shells...RIP bro, you are missed!!

[@Machiones]

You never considered what might happen for a round to go off outside the gun, are you an NPC?

[@Jaysin412]

Wow...

[@protoguy]

As I said above - Kinda disproves the myth that cartridges in a fire shoot the bullets everywhere. Without the barrel to direct the force, the casings just blow off.

[@abobymous]

This video inspired me to buy a T-shirt! Great fun, guys.

[@MonolithproductionsT]

"Budged the bullet" was my favorite phrase to come out of this

[@Happilywanderin]

That last macro footage looks massive. The graininess makes me think we are looking at some disaster that's happening on another planet or deep underwater.

[@DannyTwoCoats]

The guys that animated the intro to Lord of War WISH they had this footage as reference. I wouldn't be surprised if it is used eventually.

[@janmartinez5905]

You put a soldier a scientist and slowmo in a room and you get decades worth of content. 10/10 as always Gentlemen

[@CaptainKapitan]

@Don't read profile photo _Begone Bot!_

[@nick8144]

Since when is Gav a scientist?

[@georgedoty-williams2085]

More like a stuntman and a cameraman

[@logancluer1141]

@@georgedoty-williams2085 Dan’s not a stuntman lol He was an explosives and ammunition expert in the British army

[@lexxzus]

This is one of the most coolest, interesting Gun footage videos I've seen. The slow motion footage was priceless. Would love to see more of this with higher caliber bullets.

[@altaccount2179]

Your sound guy for the slow mo shots needs a raise

[@namemycactus]

Gavin actually does it himself!

[@SirPembertonS.Crevalius]

I'm amazed that worked lol. This whole concept reminds me of that video of a classic doom mod where one of the "shotguns" is literally just a hammer and a shotgun shell.

[@recitationtohear]

*kzbin.info/www/bejne/o3TJipxta5hnqLc* Finally it's here after so long

[@acorgiwithacrown467]

Wow, a trifecta of bots

[@usernamehere1102]

"Too Many Super Shotguns"

[@El-Burrito]

I think there are videos of people just whacking the primer on a shotgun shell without a barrel and it basically does nothing!

[@acorgiwithacrown467]

@@El-Burrito To set off a primer you need at least a slightly pointing tip otherwise the force is too evenly distributed.

[@NuAngelDotNet]

Something just seems right about somebody with Dan's career experience outside of The Slow Mo Guys getting to see this footage firsthand. I enjoy hearing his genuine excitement and fascination by what he's learning!

[@iyzyz]

What does he do outside of this?

[@NuAngelDotNet]

@@iyzyz he spent a few years serving in the Royal British Army. I forget his exact specialty, but he was something of a ballistics and firearms expert during his several years in the military.

[@mahoganywolf8843]

The British Army is actually the only branch of the UK military without ‘royal’ in the title. A consequence of the civil war.

[@threeballedtomcat9380]

You guys have done some of the coolest (and craziest) stuff that I have ever seen ! Good job !

[@user-nd7pp9ds2s]

Oh my goodness I'm laughing my ass off the bullet got delivered back into the barrel 🤣

[@OzarkCraftsman]

Gav and Dan never let us down. Every video seems to get more entertaining.

[@kiri101]

That probe shot was insane - it reminds me of the physical based special effects combined with early CG in something like Red Dwarf but how the creators imagined it.

[@LordSeth-hf8ew]

Dwarf has great affects for a cheap to show

[@SaltWaterDrums]

It genuinely looks like CGI but it's REAL and that blows my mind.

[@IndyStry]

That closeup at the end looked sooo good like imagining it at a full scale practical prop like 20 feet wide, the initial gas blowout looked like a martian sandstorm or something. Do more of those please!

[@noah88131]

actually so amazing to watch

[@7LeagueShoes]

9:00 It might interest you to know, given the distance that this bullet traveled, that there was pistol dueling as one of the sports in the 1908 Olympic Games. The two "athletes" would actually shoot at each other, but the bullets were made of wax and propelled only by the primer with no gunpowder in the cartridge. They did also have protective gear.

[@victorfox9623]

A pace is a single step and not two steps

[@Zuraneve]

@@victorfox9623 I was about to tell you that a pace is two steps, but it's been so long since I did anything resembling scouting that I double-checked. According to Wikipedia, it can be either. I'm in the US, and was taught two steps is a pace. en.wikipedia.org/wiki/Pace_(unit)

[@Shivaxi]

Really the editing team here needs a buttload of credit for the epic attention to detail in the sound fx during the slomo sequences. Obviously (and I hope most people know this of course lmao) the sounds aren't recorded in slow motion too or something, but are edited in afterwards. And they pay so much attention to every little thing happening on screen, the flecks of particles spraying, the casing smashing into the gun barrel, the flames igniting of the propellant, even a little "thwack" when the sticky pad rotated and slapped the gun barrel too lol. It's really super fun and I hella appreciate that attention to editing for a much more enjoyable viewing experience.

[@nz540im3]

Gav as far as I know edits most of it himself. He’s done a video about his editing before

[@Shivaxi]

@@nz540im3 that's wicked!

[@HobbyOrganist]

"he sounds aren't recorded in slow motion too or something, but are edited in afterwards. " Are you sure about that? I;ve taken ultra slow motion videos on my Android of my dogs and I hear the sounds recorded in slow motion, the sounds almost seem amplified because I hear dog's toe nails actually making scratching sounds as they run on the concrete

[@BoycottYouTube289]

@@HobbyOrganist Unless you paid an obscene amount of money for a phone that has a high speed aperture, I highly doubt you got over 300fps. Dedicated high speed cameras don't have microphone input. The audio is recorded separately and then slowed down to match the video by the millisecond. Most android phones don't even have refresh rates above 144hz, and that's on the pricey ones ($1k and above), so its very unlikely that they'd have apertures capable of much more than that.

[@someone7554]

@@BoycottKZbin289 this is incorrect, my phone goes up to 240fps (Pixel 6) and some Samsung flagships have disgustingly high frame rates

[@MattSmith-us3ru]

4:53 the propellant actually never burns, basically what happens is the primer gets hit and goes off and pressurizes the inside of the cartridge, pushing it out and back at the pinfire gun, but the pinfire gun is still not done shooting out hot gasses into the already pressurized cartridge, so that's why the first wave of powder flies out, it's like if you were to blow into a cup of flower and then a bunch of it flies back at your face. Then when the pinfire gun stops pushing gas into the cartridge, it creates a vacuum effect and pulls the high pressure air out of the cartridge and into the normal pressure air, which pulls some more of the powder along with it. I know I'm a huge nerd for this, but I couldn't help myself

[@kieranevans7127]

Possibly one of my faves. Love you guys and what you do …. 👍 🇬🇧

[@m8imhawk]

Dude the macro shot is incredible! If you ever ask yourself "should we try the macro lens", the answer is yes. Always loved your videos guys, right from the beginning of this channel

[@owendemoney]

Imagine Walt and Jesse driving through the desert and just see these two trying to fire two bullets at eachother 😂

[@slorchman672]

“Jessr look over there, those are my best customers! What are they doing jesrey?”

[@jamesreynolds4152]

I know a person who purposefully struck the primer on a .22 caliber as a teenager. The bullet projectile is heavier than the casing thus most of the energy is delivered to the casing. In his case the .22 casing flew backwards with enough power to penetrate his eye. He now has one good eye and one false eye and is in his 60s.

[@xenodude217]

I remember Mythbusters cooking off some centrefire bullets (literally) in an oven, and they found that the case shatters before the bullet leaves the casing. I was completely expecting that to happen here, but I totally did not expect the primers to leave the casings first to give the expanding gases a way out! This was an amazing and insightful video!

[@ShadowsOfTheSky]

Quite likely that the cooking in an oven weakens the metal casing, so by the time pressure/heat build up enough to ignite the propellant, the casing is too weak to hold itself together before it pushes the bullet away. Setting it off normally, the casing is just fine, which is a good thing. If the casing were sometimes too weak to contain the energy of the propellant and fail while inside a gun, you’d have a nightmare of a jam to try and clear out, shards of broken brass clinking around inside of the gun.

[@cloudedcoot1426]

@@ShadowsOfTheSky not enough room for a round to shatter in your chamber. at most the cassing would develop a single crack on the casing wall.

[@MusicalJackknife]

@@ShadowsOfTheSky I also wonder if heating it to the point that the gunpowder ignites would cause more of it to ignite at the same time, making a larger explosion overall than this one, where only a few grains seem to go. But yeah, it's probably more the weakened, more pliable casing.

[@cymond]

Here's another thought: maybe the pressure of the primer is pages the printer and bullet out, so the gun powder never has a chance to ignite. Speer used to make special practice agni that used a plastic bullet, and only the primer (zero gun powder). It would throw that plastic bullet at high speed, but even a heavy bullet would be pushed out by the primer alone. Likewise, Aguila makes 22LR ammo called Colibri that launches a 20 grain bullet at 700 feet per second, using only the primer. (A normal 22LR bullet is 40 grains at 1100+ FPS, so Colibri is much less powerful than standard, but also much more powerful than you might guess.)

[@ShadowsOfTheSky]

@@cymond That makes sense as a theoretical argument, but I’ve set off rounds not in a barrel myself where the primer didn’t pop out, and the casing doesn’t shatter. I suppose it’s possible if you used the powder for high velocity round but with a heavy bullet, but I imagine the primer will pop off or the round will be pushed out before the casing fails. I imagine it’s a combination of the metal being weaker at high temps, and also what @MusicalJackknife said above, because all the gunpowder was heated equally, as soon as the reaction started it all went up instantly, creating way more pressure before the expanding gases even had time to push the bullet or primer out, and the case just failed.

[@rjdaire38]

This makes full auto guns even more impressive. To fire a bullet, open and expend the empty cartridge, replace a new one, close again to allow the proper pressure for the next bullet in rapid succession

[@JerryMetal]

If you wanna go faster with the cycle you can go with a mini-gun ^-^

[@rjdaire38]

@dcoog anml definitely be interesting to see what would happen with a 50 cal

[@rjdaire38]

@@JerryMetal yeah nou doubt. Engineering master piece

[@TJ-bg4fw]

It’s even crazier to think that we’ve had machine guns since like 1880ish. Since the Maxim machine gun was invented around that time were nearing almost 140 some odd years of machine gun tech

[@kanehorath7222]

@dcoog anml it’s .223, and it’s almost the same round as a 5.56, so that would be a lame comparison.

[@thecursed01]

this was truly amazing. i wonder if ammo manufacturers would find this interesting seeing how the propellant burns/doesn't and all that

[@UKeXtremeMedia]

I would love to see the same experiment but with a barrel around the bullet. However it would probably be a lot more dangerous.

[@WayStedYou]

How do you plan on seeing what happens then

[@connorgorham5592]

@@WayStedYou make it clear

[@yaw295]

@@connorgorham5592 Actually slow motion videos of bullets in clear barrels, if you could do rifling in a clear barrel would be incredible footage, great idea

[@Teeepan]

Incredibile that these guys have been going so long and can still produce content this good

[@Teeepan]

@@arindas8357 yea I've reported it but YT can be slow to take this stuff down

[@w..r.i.z.z]

@@Teeepan how is it fraud

[@Teeepan]

@@w..r.i.z.z this was in response to a fraudulent comment that's since been taken down

[@sithic2241]

Haven’t watched one in years. Love to see the boys going hard still making amazing footage. Also laughed very hard seeing Dans classic lab coat. Not much of a coat anymore lmao

[@chrxstt]

same

[@EpicVideoGamer7771]

same

[@danielcrisp3042]

The close up at the end. Cool

[@RithwikHari]

This channel never gets old. Cheers!

[@ThoracJunaut]

i love shots like this, where you see the hammer slam forward, and before the pin actually engages and fires the round, you see the Hammer already springing back from the impact, i love those shots

[@davidjinks1789]

The parts that came off the rear of the complete round were the primer and anvil. The primer is made up of a primer cup, primary explosive compound, and the anvil. Primary explosive compound is what is used to initiate the propellant inside the cartridge case. Usually consists of lead azide, lead styphnate or a combination of other primary compounds. The anvil has 2 purposes inside the primer cup; it allows the primary explosive compound to break causing it to “detonate” (which initiates the propellant inside the cartridge case) and also acts as a “cushion” for the firing pin which prevents the firing pin from piercing the primer cup.

[@athingwhichexists]

Yeah, seems like the percussion cap got hit and damaged, and when the primer exploded it fired the percussion cap back out like a bullet (nothing to keep the cap from blowing back). None of the powder exploded because no compression occurred in the bullet to allow the explosion.

[@danhard8440]

@@athingwhichexists the secondary purpose of the firing pine is to hold it in place so that it don't do what we just seen shooting it out of the back of the bullet obviously

[@davidjinks1789]

@@danhard8440 The firing pin’s only purpose is to strike the primer initiating the explosive train. The breach face of the weapon/bolt is what keeps things in place. Very rudimentary explanation but it works.

[@KorruptKitsune]

I love their firearms videos so much

[@WILD360_]

Keep it Up. Too much love experiments 🎉🔥

[@amandafigueroa6654]

That last shot looked like a shot from a movie. Absolutely incredible. 😍

[@MegaTimeandspace]

So happy to see SlowMoGuys still making incredible videos with such creative ideas behind them. Can't wait for more

[@relaxingsound6828]

Your guys are amazing you make the impossible things to see possible

[@aceofaces1944]

The probe shot was nothing short of incredible. This is the kind of stuff that could be used in research. Absolutely amazing job gents

[@TheRealGuywithoutaMustache]

It’s pretty impressive how such a small firearm can exist in the first place

[@helovedher1845]

Is this real ?

[@dav1d9]

@@helovedher1845 nahhh it’s fake

[@kingsquirrel6068]

😂😂

[@albatross_v2]

Nice

[@meggerman9544]

I would say it’s average

[@onepiecepedia]

Amazing footage!! Would love to maybe see it revisited but with a backing with a hole behind the bullet so the cartridge can't fire backward. (i.e. using the 1" gun as a proper hammer replacement) I wonder if it's also possible to find a clear (plexy or something stronger) barrel so we could observe an amazing Slow Mo of the bullet taking off?

[@testuser571]

a plexiglass tube *might* hold up enough for a lower pressure cartridge, just the once... Would make for a pretty awesome shot too.

[@314jake]

Yep or clamp the case in place

[@CamaroSkooter]

Or they could use a ballistic gel block. Embed the 9mm round in the block, and then fire the tiny gun into the back of the 9mm case. Added benefit would be to capture the 9mm projectile.

[@RalphieVII]

kzbin.info/www/bejne/baGyiaikh759f9k This is kind of close to what you're saying. He puts a see through suppressor at the end of the barrel so you can see what all the pressure and gasses do behind the bullet

[@squidwardo7074]

Smarter every day did a video on clear suppresors... and some of them even survive a few shots

[@j23anderson17]

Thanks for all the money ya'll put into these videos. Unreal how neat modern day science and technology can be with interesting minds behind it.

[@PersonausdemAll]

You Guys are breathtaking. 😊

[@thatguy1952]

These guys have been like the best KZbin group since day one. Only dudes to last.

[@mrwoody1413]

Yeah they’re the only ones I can think of.. I’m sure there is 1 or 2 more I just can’t think of them off the top of my head.. I’m so glad KZbin isn’t the way it was back then.. there were some good things about old KZbin but overall I think it was worse than new KZbin

[@humoroustumor]

The close up footage of bullets is always so cool. Can’t wait to see more slo mo projectiles!

[@BrowncoatInABox]

I love the videos where Dan can nerd out on firearms.

[@chrisB_OG]

oh so good! Thank you for the fun video to watch during my lunch

[@galladesamurai2380]

I always love those sounds you put in during the slow mo, it's so satisfying to hear

[@xpndblhero5170]

7:36 - This shot is so awesome and I love the speeds of all the moving pieces.... Very nice touch, I'd love to see more of this in more videos.

[@vijays1012]

Excellent video I completely enjoyed every bit of it ❤

[@_The_Worst_]

Awesome experiment...🤘🏼💯✔️ Incredibly fun to watch...👍🏼

[@ejn1011]

I'm convinced a lot of engineering has gone into minimizing damage from a round that detonates outside of a firearm. This is really impressive.

[@pirig-gal]

I think it's just coincidental. You need just enough metal to make the round be durable when outside the gun, and not too much so it isn't too heavy. Also brass is very soft, so it creates a good gas seal, and also it doesn't shrapnel much.

[@HPCNight]

very little actually with modern propellent, if there is nothing to direct the forces they will dump in all directions with a pretty minimal velocity

[@datboigroovin8200]

As others have said, it’s more of a coincidence than an intentional design feature. A firearm uses the pressure of the gas directed in a uniform direction out the barrel over a distance. With no barrel all the forces dissipate in random directions.

[@bobjohnson1633]

It's not engineered to do that. The brass case is a gasket, a sleeve that is supposed to expand to the walls of the barrel or charge hole, and the pressure builds up. Having the cartridge outside of a chamber simply stretches the gasket, which expands as far as it needs to. It is equivalent to pushing against somebody with an open palm, 5# of weight as opposed to pushing a knife against a person at 5# of weight. It has to be focused.

[@nokachi3339]

Do you think rounds are dangerous on their own?

[@dan725]

oooo you can see the anvil come flying out. Interesting how the cup needs a secure bolt face to keep it in place so the cup (the round thing that flies out first) +anvil (three-pronged thing flying out 2nd) can compress all the ignited material forward to then ignite the powder in the casing. The first shot illustrates this so well!

[@jeffreyhatfield3328]

Mhm, I thought it was interesting myself. And am now wondering if that’s a feature like in case it went off while not in a weapon it wouldn’t cause as much destruction with a lesser force

[@cienciabit]

Perfect visual evidence of Newton's Third Law of Motion at 11:33 . You can see perfectly the ratio of masses between the projectile and the shell.

[@hernancoronel]

Thank you for the video! Next one you should simulate a barrel with some kind of transparent tube that can withstand for some microseconds the pressures involved. Keep up the great content!

[@joyouslyprofane]

what i love about slow mo guys content is that most of this stuff is too fast for the human eye to see, so even though we know how most of this stuff works, we'd usually never had the chance to see it actually happen in such detail before, but this kind of footage makes it possible to like...double confirm the physics and chemical reactions of things. it makes it doubly interesting to watch for me because of that

[@Sawzie]

11:41 I'm surprised they didn't notice that the force of the case hitting the gun snapped the grips in half (and unlatched the barrel too!)

[@Adalgeir]

they noticed it, 11:50

[@DetectiveDeuche]

@@Adalgeir Jeane is talking about the guns grips breaking, not the barrel.

[@speedingatheist]

@Jeanne They had to readjust the gun, so they noticed. They just didn't mention it.

[@DaReff]

Gav did say "It busted the end of the gun". Dunno what he was talking about, but I interpreted it as the grip busting. That shot was really quite something.

[@vishnuprakash8404]

@@speedingatheist I think he's talking about the bullet of the small guns which got snapped in half by the casing and the small gun barrel's edges

[@EverythingParanormal666]

this was epic guys absolutely blown my mind

[@lobotomykush5710]

Great idea for a video guys Really enjoyable

[@Railman1225]

So, the question that is the title has been answered: Yes, it can. However, without a barrel to channel the energy, or something to hold the casing in place, Newton's 3rd Law enacts itself on the bullet _and_ casing, sending both flying in opposite directions with equal momentum. Perhaps a makeshift gun barrel would solve this? Seeing a micro gun actually fire a bullet at speed would be awesome!

[@federicorios1140]

Equal momentum, not equal speed

[@Railman1225]

@@federicorios1140 thank you, comment will be edited

[@muenstercheese]

lmao, imagine the mini gun having a big barrel right in front of the tiny barrel and doing a chain reaction of bullets.... would be awesome

[@concernedcitizen3254]

Maybe just weld the bullet by the casing to a fixed metal pole that is strong enough to not move backwards, no idea if the weld would hold or not.

[@concernedcitizen3254]

This would only make the bullet travel a bit further and faster though, nothing like being in a barrel. The whole point of this photography is seeing how the rear of the bullet behaves when there is nothing for it to push back onto, which of course is how it can fires so fast usually.

[@JPBennett]

Not 100% sure that "percussion cap" is incorrect, but in the US it's far more common to call it a "primer". Epic footage!

[@ZombieWilfred]

Percussion cap is still correct, primer is just more commonly used when referring to cartridges. They were sometimes referred to as "percussion primers" on percussion muzzleloaders back in the day as well.

[@waytoocommon9198]

The distinction is the type of ammo. For this 9mm it's a primer. Percussion caps are used in lower tech muzzle loaders. I don't know the internal differences, but they are a different style of tech

[@coccapeepee]

thank you for sharing this!!

[@Shlovanzleeat]

Talk about "laws of conservation of energy", all you read in the books comes down to this. Thank you guys

[@keithbillings3649]

That probe lens shot is incredible! I can’t believe they almost decided not to do that shot 😂

[@FirstLast-vr7es]

It throws me off every time I hear someone call a "twenty-two" a "two-two." Great video. Love it.

[@bryandraughn9830]

There's always surprises! Great stuff!

[@V.I.C.K]

'I'm blown away'😂dan stop it

[@naht.e_offial]

I love how much real scientific advancement and understanding could be done with these slow motion cameras. And then Gav and Dan just use them to look at cool stuff for the KZbin public