by Matt » Sun Sep 15, 2013 9:16 pm
FPS is measured with .20g at most events, so if it's higher with a tightbore and longer barrel, it may exceed limits at fields that limit to 400. You can't simply choose a heavier BB to lower your FPS and beat the chronograph, that's not how it works. Heavier BBs have more kinetic energy, to FPS limits change with weight.