Originally Posted by Long Time Long Ranger
I am 2000 miles from my load notes but pretty sure it is 75.5 grains Magpro with a cci 250 primer. We have shot many groups in the 1.5" range at 400 yards with this load. It has taken numerous animals all one shot and down.
I'm glad you posted this LTLR. I knew you liked Magpro in your .257 Wby and I've been meaning to PM you and ask how many grains you use. I'm getting tired of the temp sensitivity of RL22.
Between my son and I, my .257 Wby with 100gr TSXs have shot two whitetails, 4 mulies, 4 antelope, a bear and two coyotes between 75 and 660 yards. All of them dropped on the spot. Fun caliber
I've formed 7mmRM and .264RM brass by simplely running it through my .257 die. The necks are a bit shorter but it's cheaper and I get exellent accuracy with them.