Great advice, I'll keep an eye for the Rem 405gr. I already reload but haven't purchased dies yet. It would seem my ol standby IMR 4895 isn't any good for 45-70 as well, any suggestions. I could just buy brass but where's the fun in that lol. Nothing like buying a couple boxes and needing to empty them out for the bench!
My Shilo Sharps #3 Sporting Rifle, in .45-70 loves IMR 4895 and Bullet Barn 405 grain GC bullets for taking down steel rams at 500 yards.