Obturation
Member
I like imr4198 in 45-70 too. I usually just use the standard 405 grain. Just got some coated 405s from mbc and loaded 50 up. I've got a couple moulds for heavier bullets but I'm not casting yet, building a garden shed/casting room this year out back. My wife is super concerned about lead fumes because we have babies in the house, I don't blame her.Get the Barnes 250's. They'll shoot faster than anything else will in the .45/70 for sure.
I just loaded some heavy weight bullets; 450 gr Acme coated LFN over 34.1 gr IMR 4198, W-W cases, CCI LR primers. They pack a bit of a punch at the muzzle end, but aren't abusive in the recoil department.
Stay safe.