I agree that the .338 Lapua would be my choice only because you don't reload. The .338-378 would be my 2nd choice. I will also tell you that until you reload, you will be shooting $5.00/shot ammo that is not nearly accurate enough. If you can't shoot 1/2 MOA you are wasting your money.
Shawn Carlock - Rathdrum, ID is the founder of the .338 edge www.defensive
Brad Stair - Ogden, UT is the founder of the Tejas round .22 - .50BMG Brad is at Cross Canyon Arms. Www.cc-
Both are excellent smiths and both know their stuff and both friends of mine.