There is that extra .014 in diameter, gives the 257 bore waaaaay more killing power. Hate to say it Stick is right about present day 6MM's and fast twist barrels being better for shooting way out there. But none of them will do anything I can't do with my 257 Roberts out to more than 300 yards. I like to actually hunt so seldom shoot past that anymore. There is something to be said for the 120 gr. bullets also.

Dog I rescued in January

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