I have a 94 win with a 10" twist. I have been experimenting with the rcbs 150gc bullet. I have found semi decent loads in the 1700 to 2000+ fps range using imr4198, imr4895 and w748.
The load density from my calculations should be better using imr 4064, that is, more case fill. Anyone here tried it, and how were the results?
Yes, it is a 10" twist, 26" barrel. I fitted it.