My opinion probably will not be popular because I don' t worship at the alter that says velocity is king. The larger the game the more important caliber and weight become. Hunting elk, moose and especially brown bear I would feel much comfortable with a 338 Win Mag than any 300 mag. I notice a differance even on deer and black bears when I make a kill with my 338-06 over my other lighter and faster rifles. I' m not saying that velocity isn' t important but don' t underestimate the effect of a larger and heavier bullet.