I know I've posted stuff about the .257 Wby. many times here, but here goes again-
I shoot a Wby Fibermark, 26" bbl. By far, the best load I've worked up for it is 72.0 gr. of RL22, factory Wby brass, CCI 250 primers, Barnes 100 gr. TSX bullets, for a MV of 3700+ fps.
Accuracy is exceptional.
Over the past 25+ years of owning this rifle, it has accounted for a passel of game, including a sheep grand slam, pronghorns, mule and whitetail deer, elk, caribou, and coyote. Last big critter to fall to the .257 was a cow elk, December 2008.
As far as brass goes- I have in the past bought some new, unprimed Wby brass, but most of my handloads use brass from once-fired factory ammo. I find brass life to be pretty good in this cartridge.
