Fotis thanks for the link! Good read over there on the Nosler forum,and looks like Beretz has the Mashburn getting some traction.
Pretty much since I got it 5 years ago,my rifle has been operating at 3200+- fps with 75.5 H1000 and the 162 Amax, 160 NPT,and 160 BBC. Most everyone I know who has worked with the case gets these velocities with 160's. My pal runs his with the 160 AB with Retumbo at 3250 with no ill effects.
We've noticed cases will quit from lack of annealing a long time before primer pockets open up and quit at these velocities.
Anyway 3200 fps seems to be easily obtained with modern powders,and from a 24" barrel to boot.
