Thanks again Hubb and Technician!

welcome to Spudfiles.

thanks for that and the quick response.

My next step is def to make my piston fit tighter, I was more so curious about the piston face than actually thinking that was the problem. My seal with the barrel is great so far, I've pressurized the whole thing up to about 80psi ...

Hey guys,

I've been a "lurker" for awhile and this is the first time I'm posting as I've finally begun building myself a gun! Hopefully you won't mind helping a n00b. I've searched for my question a few times but may not have done due diligence in that department so if its been answered you can ...