"it was just a nerf battle" "YOU KILLED 7 CHILDREN"

you need to invite some kids to a nerf battle

Thanks for trusting us with capturing your supersonic projectiles! You’re welcome back on our range anytime 🙂

this has the same energy as: "the neighbours are having a water balloon fight" "waiting for the water to boil" edit: waiting for mike shake to notice me 😃

Small town italian police must be very happy to know one of their neighbor just developed and is in possession of the cheapest long-range lethal weapon ever

This is what that one unemployed friend is doing on a Tuesday.

A lot of modern tanks have smooth-bore guns (no rifling). To shoot a stable round, their ammunition has fins and a sabot that discards during flight (APFSDS). I think it would be cool to try and make one of these rounds and test it with this gun. Great video!

Finally a long range weapon that is useful in the apocalypse

Hey Mike! I study Aerospace and work on aircraft. One reason why you might have had a problem reaching Mach 1 is because of drag increasing as you get closer to Mach 1. So, reducing the cross section area of the foam darts to improve transonic performance might help. Additionally, the moments of inertia for a bullet with 2 different bullet materials might be the reason why the foam darts disintegrated. In theory, you'll need to make sure that the bonding material is able to handle the stresses and strains of the moment of inertia much better. I'm still a student, so I might be completely wrong, but trying with these improvements might help.

These videos just prove that the pinnacle of human weaponry will always be a sharp rock thrown at incredible speeds

I think the best projectile to use would be metal balls like in old flintlock guns, rotation wouldn't be a problem and you could get a better seal by rapping the projectile in paper like they did as well. I know it's not as cool as over engineered bullet designs with fins and all, but most of the time simplicity is pretty effective. There is a reason for most of the commercially available air guns to shoot spheres.

Just a tip for the rifled bullet (from someone working in the industry and talking with many ballisticians) the reference footage of the bullet that you put into the video is 8.6 blackout, one of the fastest twist rates of any bullet manufactured today. Looking at the spirals of your printed bullet, they are WAY too steep (they have far too many rotations per inch) and you may be getting serious destabilization due to it. Try it again, but this time calculate a twist rate on the projectile for a 1:10 twist rate. (One full twist every 10 inches). Other inspiration can be had by looking up "rifles 20ga slugs" and mimicking some of the design choices.

ATF’s search history: “is Mike Shake in the USA?” “Quickest Location to ??????”

The speed is literally mind blowing!

You just reinvented the Girandoni Air rifle carried on the Lewis and Clark expedition. Some were used as sniper rifles. Invented in 1779 by an Italian.

ATF during the nerf rounds: “Oh hey that’s pretty cool” ATF during the metal rounds: “get his address”

I think a ported barrel might fix your darts blowing apart. There is a cavity in the dart that is pressurized in the barrel, but the dart is supported on the outside by the barrel. Once the front of the dart exits the barrel, it is no longer supported but still has that pressure inside until the back of the bullet exits the barrel, releasing this pressure. A ported barrel would release this pressure while the dart is still supported by the barrel, possibly keeping the dart together.

Hey mike i have a suggestion that would make your device much more powerful without any changes on the hardware. First a bit of theory to explain my suggestion: A gas under pressure can only expand at the speed of sound in said gas. If pressure increases beyond the point the gas can move away from the point of high pressure, so if it still tries pushing away beyond the gas front reaching the speed of sound, the gas just bunches up on the gas front and creates what we know as a shock wave. If we use air under pressure to accelerate our projectile the theoretical maximum velocity of the dart can not be more than the speed of sound. If the dart is traveling at the speed of sound the gas behind the dart pushing it forward can not move any faster itself. Even with a million psi behind it it would not go faster than the speed of sound. Now my suggestion: You could use a gas that has a higher specific speed of sound. Helium for example is not too expensive, available for purchase to anyone and the speed of sound in it at normal temperatures is a whopping 3500 km/h! Which would be your new theoretical maximum speed for the projectile. You could also heat the gas you are using, because the speed of sound of a gas increases with temperature. Thats how regular firearms do it. The chemical reaction of the propellants release mainly CO2 which then pushes the projectile through the barrel. But CO2 has a speed of sound very similar to air, so why are firearm projectiles so fast? Its because the CO2 leaves the chemical reaction very very hot which increases its speed of sound dramatically and makes firearm projectile speeds possible. Be careful with heating pressure vassals though, because increasing the temperature both increases the pressure and lowers the tensile strength of the material the vassal is made of. So, dont blow yourself up and use warm helium and a long barrel to reach crazy speeds. For the maximum possible pull a vacuum in the barrel, so the dart doesnt have to push away the air in front of it when traveling down the barrel. To recap: Use Helium to pressure the tank. Make sure the gas isnt cold. Use a long barrel. Pull a vacuum on the barrel if you can. Do this and you should reach projectile speeds around 970 m/s.

*_Some truly epic high speed footage! Great work guys!_* _Maaaan, if that thing had an actual rifled barrel.. it would be nutz!_

18:43 "You have any ibuprofen? I got a headache"