Went to the range today with a friend and his .257 WBY. We loaded 4- 5 shot test loads all with 215M primers, Wby brass and 110 Accubonds, powder was 7828 IMR 67 - 72 grains. Had trouble with all loads, any suggestions?
I own both, I've tried everything from 55-95 grain bullets in the .243. My gun, a howa 1500 really liked the 70 grain BT but had trouble stabilizing anything lighter. A 1-10 twist really cant stabilize those light bullets but they do make for a really good explosion.
My 22-250 is a kimber...