I just found out that the specs on my bow say that I should shoot a minimum of a 420 grained arrow. The arrows I shoot, and have been shooting are only about 375 grains. I have a 29" draw with a 70# peak with 80% letoff. (PSE FireFlight LC) I shoot a 29.75" Gold Tip Xt Hunter @ 8.2 grains per inch with a 100 sometimes a 125 grain head, ez crests, fletched with the quickspins now. I have consistant accuracy, my bow is in tune. I was just wondering if I am missing something or Just wondering if anyone can shed some light on the subject that I dont understand.