So we were having a pump only day last weekend and I was playing with a CCM Sniper. I decided to shake things up a little and pull out my PGP. So I screwed in the 12g, dry fired it to pierce the 12g, and nothing really happened. So I took the 12g out and it had a VERY small hole in it, and it was still leaking out CO2 when I threw it in the trash. I tried it again, and this time it pierced it fine, but all the air leaked out around the grip. Any ideas as to what I could do to fix this problem.
BTW, I dont have much experience working on the PGP so please be as specific as possible. Thank you.
Probability is a math law, not an aiming technique.