When I load my .45-70 cartridges with a 405 gr. RNFP Laser Cast bullet and about 68 grs of BP, I use a .030 fiber wad. This the same as a GC and a lot cheaper. I experience no leading and very good accuracy.
I shoot these rounds from my original '84 Springfield Trapdoor and my Pedersoli Sharps '74. I haven't run any rounds across my Chrono yet shooting the black powder rounds but will shortly.
I don't want to chide anyone for their actions, but I would not use a pure lead bullet in a cartridge gun unless I was shooting a cap or flint lock. Just my thoughts, of course.
