Butch,
I've got three 284 bbls., and have shot RL17 in all three with both Berger & JLK 180s, as well as S175MKs. I can get 2900fps out of both of the 30" bbls. with RL17, with accuracy good enough for LR prone HP matches. However, H4831 (not the SC version) produces 2800+fps, with slightly...