I will of course segregate the brass by head stamp. I always do. Have plenty of powders, 4350 looks like a good starting point have the RL's 19 22 etc as well. The Rifle is a pre64 Model 70 so not really worried that it can't take a +P round. First time I have seen a rifle round with a +P section.. Was wondering if for some reason the older NON +P brass would be suspect.
RL19 and RL22 would be the place to start if you already have those powders.
My 257R lives on RL19 and either Hornady 117 btsp, or Nosler 115 bt. No complaints or reasons to change.
I shot a pound of H100V trying to get consistant accuracy but didn't get it compared to RL19 in my Ruger 77.
