Just picked up a Marlin 1895 in .45-70, so am looking for everybody's "favorite" load for the round. I haven't even sourced bullets yet, since except for a .30-30, I've never really handloaded straight-walled cartridges.
I have loaded thousands of straight wall pistol cartridges and it should not be a difference for the 45-70. I know the 444 Marlin is basically a lengthened 44 mag. The nice thing is the worry about a stuck case is gone.
I originally wanted a Marlin 444, but it looks like Remlin may have cancelled that model, and the cartridge has always been very expensive for some reason. Besides, I can walk into any mom n' pop store in the bush of Alaska and find .45-70 rounds. Bear medicine, of course.
I think I'll start looking at Kodiak Bullet Works bullets.