Mike Matteson
Well-Known Member
I used IMR-4350, IMR4831. I found that as the heat increased so did the pressure, and more so with the IMR-4350. Tried H-4350 in my 308 Norna Mag loved it with 165 gr. Nosler. Down the tube at 3300 pfs 20 years ago. Never when back, and still use the load today.