The Original CZ Forum

CZ LONG ARMS => CZ AIRGUNS & AIRSOFT REPLICAS => Topic started by: dixda on March 23, 2004, 07:33:33 AM

Title: JM 630/631 kit velocity numbers?
Post by: dixda on March 23, 2004, 07:33:33 AM

Has anyone chronied their 630/631 after installing the Maccari spring and spacer kit? I put this kit in my 630 and noticed the difference(for the better),now I need an approx.figure to estimate the fpe using JSB Exacts 8.3gr. Thanks, to anyone that can repy.KD