WB
I have worked with the .416 and .440 GNR
Thursday, October 18, 2018, 06:47

and even the .476 GNR a little. I figure that will be a good starting point as the larger caliber should give lower pressures given the same bullet weight and velocity, that's a BIG generalization, but with some conservative application it seems to work.

For hot loads I have used H332, Puffy liked IMR 3031, and I think Sean uses it some too in the .416 class GNR. I'll certainly try the 4198. Sounds like a good excuse to buy a pound if I can find any around here.

Really hefty bullets with Trail Boss are so much fun and not a cork gun. 500 gr. slugs at 1100 fps are hard to stop, don't sack bolt springs, or aggravate carpel tunnel issues. The 400 gr. at 1800-2000 fps start to get real serious. I can only manage maybe a dozen in a day. Good to back up that session with a .327 or .255 Banshee etc. to calm the nerves.

It's all great fun and not fattening.