Originally Posted by
eyebull
Is it upon first firing, or as soon as you pierce the cartridge?
Could there be a piece of debris in the valve?
Soon as capsule is pierced it all dumps down the barrel as if the valve is permanently open. Had it to bits about 8 times, it is very clean inside the valve chamber.
Baz
BE AN INDEPENDENT THINKER, DON'T FOLLOW THE CROWD