What powder do you use for your 338 Lapua??? I need to buy powder for mine that I'm building to have it on stand by. What powder do yall recommend? I'm going to be using Berger 300 grain hybrid match open tip bullets out of a Krieger 1:9.35 twist at 30 inches over all finished length. I just ordered (4) 100 count boxes of these bullets... $75 each!!!! Gotta pay to play I guess.... They have the best BC at .818 that I've seen though.