1:9.5 for this rifle, berger's calculator shows I should be able to stabilize their 184s with it at my altitude (about 5000ft). Gonna try them out and see, I already have 100 of them. Thanks for the input on the powder, think it would be appropriate for a coues deer/antelope specific load with a bullet in the 140 range?Depends on what bullet you’re shooting. I’d say it’s too fast for the 28 Nosler and any bullet that makes sense to shoot out of that large or a cartridge. Personally I don’t want to shoot anything under 175 (really I want to stay well over 175), to me that’s just not what that cartridge is best suited for, I also have a 1:8.