(Video Link)
YouTube user GatheringSticks is quite a garage machinist! He's built a functional single-shot 12 gauge shotgun from a pipe and a stapler. The firing pin is a sharpened drill bit and the shoulder rest is padded with a piece of a Croc.
via Everyday, No Days Off
Burning Gunpowder, 30,000-50,000 psi
Internal Port (back) Pressure, 10,000-12,000 psi
Conversion of Gunpowder into heat, energy - 48%,48% (with 2/3 going to the bullet and 1/3 to the gases)
Ratio of Pre/post burn (i.e. soot) - about 60/40.
1" Schedule 80 Pipe (@100 F), 3,950 psi burst
Best clean that barrel after each shot REALLY carefully or BOOM.
I doubt it--or he--will last much past the second shot.
He gets bonus points for painting it black - its a primordial AR.
even though, I bet he wishes he would have ponied up $150 on that used mossberg pump when the skin grafts start to itch.
That's the modern problem: these days they are keeping the idiots alive. Darwin is turning in his grave...
PS: Just saw the movie Idiocracy. ;)