I used to have a 300WM, that I sold to my brother - in - law, that would only shoot 165gr Barnes TSX. That loading was IMR7828SSC, Win brass, Win LR primers (non mag). With that loading, and only that loading, it would hammer 5 @ 100y into about 5/8" - 3/4". I never did get that gun to shoot bergers. For that matter the only other bullet it would shoot at all was the 175gr SMK, and that was 3/4 to 1" @ 100.
Then again my 6.5x55BJAI shoots the 130gr bergers pretty well these days
Well, not these days so much as I finally shot the barrel out.. :P But for well over 1500 rounds of berger 130s...