I can't help but think of this as a really weird, small and overcomplicated mortar

Another way to do it would be to design a recoiless rifle. The rifle could simply consist of a barrel open at both ends. The recoiless ammo can be caseless, made of a fast burning propellant grain pressed onto the base of a bullet. The ammo is inserted into the barrel until the propellant grain is against an electric igniter. The gun is fired over the shoulder like all recoiless rifles, the jet of gas goes out the back, the bullet goes forward.

I gotta say I really like the blown up Patents you have very cool look

Theory: if the air is compressed enough it could self ignite the powder like in a diesel engine, making the percussion cap unnesessary

If you haven't seen it take a look at the "Chambers Flintlock Machine Gun from the 1700s " on forgotten weapons. That firearm sort of reminds me of this. Well to be honest it's pretty different but it does incorporate the stacked bullets with charges in between each projectile. I'd love to see someone recreate one of those.

This is really cool, because I thought of this idea as a weird revolver shotgun mechanism. Normally, a revolver is heavy and bulky because the cylinder chambers must deal with the peak pressure of the main charge. But if the cylinder is at the _front_ of the barrel, it only needs to deal with minimal pressure. This would be particularly true with a long barrel, and in this case it's possible for the barrel to be almost the full length of the gun.

I haven't watched the video yet fully but just want to add in case you didn't mention, those slugs are actually spin-stabilised, but they spin quite slowly compared to normal rounds of course, so they are still quite different.

You might not need a percussion cap. Compressed air heats up as it’s compressed, so the compression itself could be enough to ignite the powder.

The grooves on a "rifled" slug (foster slug) are actually designed to swage through a choked shotgun safely while raintaining accuracy.

what an awesome and interesting video man, my little reptile brain doesn't fully comprehend how this works but it's cool none the less. this channel has lots of potential! I'll definitely be checking out your other videos. cheers!

Honestly, it could work best as a tank/cannon ammunition concept. Like a HESH-Canister multipurpose round.

Since the premise of the challenge was the simplest way to make practical firearm and he said to make a reasonably practical firearm he needed only a barrel, hammer and two bullets my mind went towards a simpler solution. A simple barrel drilled all the way thru making basically a pipe. Then a hole drilled for a percussion cap in the middle with the hammer mounted. Place powder in the middle with projectiles either side. When firing the bullet traveling backwards maintains the pressure for the bullet heading forward removing even the need for a breach of any kind. Sure it might be slightly impractical having a second bullet traveling backwards and needing to clear the backblast and make sure no one gets shot, but he said "reasonably practical" and that I feel gives some leeway.

Hm, this is very strange. So the purpose of the two charges is to avoid having to use a ramrod? But what mechanism ignites the charge at the muzzle end of the barrel that would allow another bullet to be shot through it?

Love your channel, very well spoken and informative. Keep up the good work 👍

Oh neato. Much appreciated. Thanks

I thought you would go with a typical recoiless rifle model. You could use one large charge and two projectiles. One projectile facing each end of the open ended barrel. You place one percussion cap nipple at the midspan of the barrel. The when you set off the cap one bullet goes out each end. No recoil. Dangerous to stand behind. You would be able to technically fire any size projectile, much much larger than a conventional firearm.

this is actually quite interesting

Or the young gunsmith went with a recoilless design.

great to have you back..... i was beginning to wonder what had happened

This is the equivalent of watching too many movies, but before movies were invented.

FYI rifled slugs don't stabilize, they look like that so they can squeeze through chokes.

I can see this being implemented into a recoiless rifle or a bullpup design as the trigger mechanism/assembly could be towards the front. The only problem is if you want it to have a detachable magazine. Hell maybe a tube.

The solution the young gunsmith is a gun with one barrel with two muzzles. The hammer is located in the center of the barrel, each bullet is muzzle loaded with powder between the bullets. When fired a bullet leaves each end of the barrel in opposite directions.

Look up the Walch revolver. 6 chambers, 12 loads, 12 percussion caps.

The compression of the air could be hot enough to light the second charge.

Perhaps you could use a full brass .410 case and when the chamber is cut out of the muzzle have a series of grooves cut into the chamber that when the loading charge is fired the case expands into from the pressure between the balast and the projectile thus providing resistance, similar to some early blowback delaying self-loading pistols, this may offer an additional grab when the pressure is high from the loading process but he quite readily blown out when the main charge is fired, worth a try at any rate

much simpler , a tube with no plug powder in the middle and a bullet facing both forward and backward , keep the barrel over you shoulder and make sure your back blast area is clear

Why use one to load the other when you can just make it a recoilless rifle by having it fire out of both ends? That would be my solution

Huh. My personal headcannon for the problem was a sort of caseless high-low system where the bullet is firmly attached to the propellant and the high pressure chamber, while the barrel is the low pressure chamber. Basically load and fire as any mortar.

I would think the simplest gun would be a recoiless design. A simple steel tube with a primer hole in the middle. The cartridge would be a paper cartridge and have a shotgun slug at each end, with the powder charge in between. Load with a ram rod till the cartridge is in the middle of the tube and the powder under the primer hole. Insert primer, and strike with a hammer. Dangerous both front and back, but so is a recoiled rifle.

Looks like a fast track to a face full of shrapnel.

I love the way you say bullet haha

I like the moral and scientific approach to this subject matter. Well done.

Love the videos

This can be quite good for a gun that can shoot backwards.

Thank you 😊

Two bullets and a barrel? To me, that sounds like a way to make a recoilless weapon if you put the two bullets back-to-back with powder in between them in the middle of the barrel. This is the principle that was used by the German Armbrust, the Israeli Matador, and the first recoilless weapon ever made: the Davis gun.

My guess after he said the gunsmith asked for two rounds was just a powder charge in between two bullets in the middle of the barrel. One would go forward, the other backward. Lighting it would be the tricky part. Maybe a small hole in the middle with a percussion cap.

It seems that the powder would ignite on its own from the compression of the air,like a fire piston used to start fires.

Is there a way to check how many rounds left are in the mag without extracting every round from it and without having a modified mag, where you can see the amount of them from the side?

wouldn’t the heat and pressure made from the compression of the air behind the main charge be enough to make the powder auto ignite removing the need of a percussion cap and a firing pin in the bottom? although it probably won’t be a reliable way of ignition at all without a lot of testing

Question: since air heats up as it compresses, could you use that as the ignition source for the main charge rather than having a separate primer? Sort of a diesel gun rather than the standard petrol gun?

heh making the simplest firearm, but the most complicated bullet :) Complexity does not go away, it just can be hidden. Anyway a very cool experiment!!

Seems like a Kentucky Ballistics incident waiting to happen

Could the compression of the air get enough heat to ignite the powder charge?

If the apprentice tapped the center of the barrel with a primer nipple he could use a BPB configuration sending a projectile out each end.

If you put smokeless powder in a black powder firearm you get a gun that fires all ways at once

3:03. Igniting the powder charge wouldn't require a percussion cap. the rapid compression of the air between the projectile and breach would cause a significant kinetic-thermal energy transfer. more than enough to ignite any combustion process.

I'm pretty sure having a percussion cap behind the "main" charge is unnecessary. The adiabatic heating from compressing air more than 10:1 that fast should be more than enough to ignite the powder. There was a "powder-assisted pellet rifle" which used exactly that in lieu of a primer or firing pin. It used a piston system like is found in spring airsoft guns, but it would compress the air enough to ignite the propellant charge at the base of the pellet. I can't recall the name/manufacturer of it though.

A steel pipe barrel with both ends open and a hole in the middle, similar to a flintlock opening, it will use two projectiles on opposite sides of the hole in the middle of the pipe, with the powder being between the two projectiles, powder is touched off by a match and both bullets are fired in opposite directions, this design is the simplest in terms of least amount of effort, requiring only a single hole to be drilled in a pipe or barrel Obviously you can cap one end of the pipe and make it fire in one direction but that is not as simple as drilling a single hole in the middle of a steel pipe

i love your videos

I'm really about you uploading again! I was worried for your health with all thats going on..

Kind of how the first atomic bombs worked if you jacked up the chamber pressure from the 2nd explosion to the Kiloton range

this but one side has a firing pin so it hits what it hits and then stops/goes back

someone may have said this already. but a primer on the main charge should not be needed. the rapid compression of the air in the barrel should generate enough heat to ignite the main charge, much like a fire piston can be used to light char cloth

So it would basically kill you in the process of loading it? N i c e .

interesting!! just that it would make the aim difficult. the first blast will shake the gun, i know the reaction would be little still to a hunter or anyone they wont go for it! but very very interesting

Didn't Fiocchi make something like this in 9mm. A 9mm cartridge with a very thick base that was meant for a blowback pistol with fixed barrel.

omg i was looking at your page like one hour ago thinking omg when is he gonna upload another video and i just opend youtube and u just made one thats pretty cool btw im 1st jeeej

I love this guy

I dont understand the need for the second charge in front of the projectile. You ignite the main charge in the hollow ballast which pushes the projectile down the barrel while the hollow charge moves the other way and acts as a counterweight ( Force applied equally since we have no closed breach ). The projectile is now moving down the barrel while pushing/compressing the second charge in front of it. In my mind that motion quickly applies friction, enough so to ignite the second charge which would thereon create a negligible 2nd explosion . That gas pressure would slightly slow down the projectile while the rest of the gas pressure just leaves the barrel (recoilless rifle style). I just dont get it. I would just create one solid hollowed counter ballast out of a very dense material basically acting like the bold of an open submachine gun, so the mass alone creates a breach which would then let the gas pressure push out the projectile out the barrel while the hollowed counter ballast gets just pushed slightly down the other side ( since the same force is applied to more mass)

I really don't get why anyone would've wanted to build a gun like this...

Couldnt the compression (of the 2nd charge) spare the need for a primer (sort of a Diesel gun)?🤔

metalstorm pistols used stacked bullets, but not in this way lol

whats the powder wading your using?

The vague story seems legit.

Out here solving problems no one has

Don't need the percussion cap you can ignite the powder with the compressed gas

I'm not sold on a gun design, but it might make a pretty fast primitive cannon . I get the fuse, but not a hammer striking it and getting out of the way as far as an accurate shot. I'm assuming the plan it the first bullet knocks it out of the way and in the second doesn't have to hit it. It seems like a design with way too much to go wrong for a slightly increased rate of fire vs just loading a muzzle loader, though if this was 200 years ago I might think otherwise. The role of a cannon is better suited to the increase in my opinion

I think the powder will self ignite when air is compressed. You have a very large compression ratio in the design with bullet acting as a piston. I will watch the second video now.

Okay but my guy could play gomer pile if they did a broadway version of full metal jacket. Not hating I would honestly pay to see it.

Could you make a bullet that fires so fast it rips itself apart and disintegrates from the friction of the air

Very interesting

I heard "dodgy slam fire design" as "Dodge Islamic-Fire design" and was... so confused.

just crazy

Universeal bullet or backwards bullets i know the stories an how they became an odd as the may look strange but they work

Recoilless rifle is also a possibility...

How to destroy the backside of your gun and rip apart your shoulder

Maybe they should make a powder-bullet-powder-bullet for increased velocity 🧐

Where can we get those posters in the background?

I don’t understand how you would ignite the charge with open ends of the barrel on both sides. Is there a hole in the barrel between the two bullet ends? A visual reference would be helpful. You said it is the easiest part of the problem but it doesn’t make sense to me. Maybe I am having a hard time understanding your accent, I’m not sure.

1:52 what’s the bullet by the slug?

Are there wide ammo shortages in italy

and also that the regular shooting will damage the barrel!!

Hello! I know a good idea for the next video! Try ceramic tiles and other tiles if they are bullet proof! And how mucht of them need to stop a .50 BMG , 7.92 Mauser, and a normal 7.62 bullet! And also try to make a sorta kompozit Armor by layering I made one like this! Sheet of metal (thin) ceramic tile and a booklet! This is one layer I think tha 2 layer may stopp a 5.56 bullet!

Pretty sure backyard ballistics is my distant cousin this is wierd

so using a bullet to load a bullet from the mid barrel.... I fail to see the utility

But why?

bruh he didnt even shoot it

WHO made your logo? Plus I don't see your backyard lol.

KZfaq keeps unsubbing me :(

Question that has nothing to do with the video: Do you have a tremor? It seems that whenever you hold an item in a video your hands are trembling.

they all shot both ways automatics fire the shell back at you ,why not make it another bullet 2 barels together with a U SHAPE TO FIRE OUT 2 WITH NO RECOIL

Apparently youtube decided to not let me know this video came up...

Sounds like a waste of powder and ammo

sei italiano?

You are speculating completely out of the blue, aren't you?

Boollets

0:03 nobody who isn't the dirtbags at KZfaq cares about or wants these disclaimers

backyard ballistics? more like backwards ballistics... I'll see myself out