Kind of new here and have a barrel/breech leak on my hp max .457. Poppet appears fine...o rings all seem fine on the barrel itself,(2 outside barrel 1 inside)... beginning to think maybe the tiny valve pin in the cylinder could be the issue?....specifically the tiny spring or the O ring on the tiny pin. At a loss to some degree. I have added a pic of these little parts(not sure how I will get them back in now)...also the O ring that is off in the pic is the original, I placed a "fatter" one on it....but to be fair I'm not even sure these parts are the issue.
Last edited: