Slight thread drift -
For years my "go to" load for the .270 Winchester has been 56 grains of 3031 and a 130 grain Sierra Gameking. I have yet to find a .270 that won't group that load. I realise it is a smaller bore but it is the same case.
As others have mentioned, maybe not the best choice for heavier bullets.
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Big bang, much smash'em.
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