SpudFiles

I am planning on building a pneumatic cannon, and before I start, I always wanted to make a breech loading cannon, so I am wondering if breech loading can be air tight. I want to know if breech loading works for a pneumatic cannon.

Thanks,
greeneyehawk

Start here.

Then here.

If that don't work try this.

and herehttp://www.spudfiles.com/forums/bolt-ac ... -t310.html and this says how to make one

greeneyehawk wrote:I am planning on building a pneumatic cannon, and before I start, I always wanted to make a breech loading cannon, so I am wondering if breech loading can be air tight. I want to know if breech loading works for a pneumatic cannon.

Thanks,
greeneyehawk

A slip coupling could be slid over a loading port cut in the barrel right after the valve. They have seals and don't need to be tightened to the point it won't slide easily.

awesome, thanks guys