Homemade air shotgun

[FighterAce]

the screw threads into the plastic. that is where i think it will fail .

Who cares.. the hell with plastic! Go metal! 

[Juggernaut]

Nice airgun, some paracord would go well on the air chamber as well and provide a comfortable grip. Leave a loop at the bottom that can go around your wrist, and it will give some more support. Looks a heck of a lot better than my first.  If you use a stronger schrader with threads, you should be able to take the pressure up nicely with such a gun. As it is now, I'd take it up to 150 psi with no sweat. Try some AA batteries if that is type M copper for the barrel, you can launch them out of sight. 

thanks      where does one acquire said screw in schrader valve? 

[Forum Admin]

you can get them from lowes over by the well pumps and pressure tanks. they have 1/8" npt threads. you can get the suitable bushings to reduce the pipe to that thread over by the brass pipe & fitting area. Other hardware stores should carry them as well, you might have to ask around. I've found them at farm supply stores with 1/4" threads, which is even better. I personally bought a few from http://www.hydro-test.com/products/226 a few years back (they were cheaper then). Been using them at pressures up to 650 psi with no problem.

[mouz]

i'll look into that to.