I shoot the bergers through my lapua. .. ill show u a pic when i get back of an elk my gf just shot in rhe spine at 900.. no way an smk could have done what this berger did. Mine group about an inch at 200 . But just gets better the further u get out
I can't speak for the 300 Bergers as I have no first hand experience. I had my .338 Edge before the Bergers came out and have only used the 300 SMK. Even with the slight higher BC I never felt the need to experiment. I get great (consistant) accuracy and on game performance with the 300 SMK. I have shot deer from 50 to 1425 yards and never had them take a step. Also dropped a nice bull elk last weekend in his tracks with a properly place 300 SMK @ 1006 yards (complete pass through, lots of damage).
They are both capable of great accuracy, external ballistics, and terminal performance. Use the one that shoots the best out of your gun.