Using Lee 255gr LFN's, powdercoated, I've had good luck with 21gr of IMR40227 in my 24" Rossi 92 rifle. But now I have a 30" Uberti 1873 and am wondering if I need a hotter load for the longer barrel, or a weaker load, or what.
Any advice? I want to use the hottest loads I can, to reach the steel plates that are waaaay out there.