One thing about my .375's, BRNO and Savage, including both .375/06IMP's, group all bullet weights from 235gr. to 300gr.
into 2 to 2 1/4" at 100yds & now mtrs. The 270's and 300's are usually in the same group, maybe 1/2" lower for the 300's,
but the 235's grouping 1 1/2" higher. Just about perfect bullet impacts patterns.
I have one 9.3x62 that does the same thing, with .232's, 286's, 293's and 300's.