I wasn't sure on the chamber I will get a smaller one tomorrow. JSR the bike inflator is a regulator I'm not sure on the psi output I may add a T piece in and attach a meter. And I was thinking of using an empty Co2 cartridge as a magazine mounted above the barrel with a strong magnet bellow to hold...

Hi all this is my first post, but not my first build. It has been quite a few years since I have attempted an air gun of any sort, after looking around spudfiles and seeing one of JSR's how to's on a $20 QEV valve I thought I would make myself a plinker. The 166hand stands for 16gram Co2, 6mm barrel...