Originally Posted by Albertaguide
I was loading rounds for my 243win. Disappointed in her apparent distaste for 107 Amax. But pleased with the performance of 90gr Bergers. It occurred to me if I shoot lighter bullets faster the less time gravity has to work on them. I primarily use the quarter bore for coyotes from muzzle to 5-600 yds. No complaints or issues with my pet loads (75gr amax and 90gr bergers) just curious when does BC trump velocity?
I'm a lil confused by the post
First anything over about 100-105gr out of a .243 needs a fast twist bbl to stabilize from what I've heard.
Second, a "quarterbore" is .25 cal not .243......
My personal opinion on "most but not all" rifle cartridges is it doesn't make a whole lot of difference out to 4-500yds speed vs BC. But the farther out you go, BC becomes king no matter what cartridge.
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