Stockdoc , I have tried the H380 at 38gr. and my vel. is 3719 fps avg. My Lee Manual lists 38grs. as min. What is your velocity, and where did you get info.? I have a SMK 52gr, Lapua brass, cci br2 primers, God only knows barrel 1-12 twist. H4350 is giving 3535fps avg. at 39grs same everything...