I hope you folks don't mind a little background...I've recently procured what has become my favorite rifle, a Lyman 1878 (Pedersoli-Sharps 1877). The Pedersoli is of shockingly good quality with a forged receiver and a cut rifled barrel. I have more than a couple 45/70's so that particular cartridge is pretty pedestrian to me so I decided to do something a little weird with the Lyman. I had it rechambered to 450 Nitro Express. I would have liked to had it in 450/400 Nitro Express like my Ruger No.1 but I didn't want to have to go the whole new barrel route. All that's required to go from 45/70 to 450 NE is setting back the barrel a thread or so and hit it with a finish reamer...Ok, why did I do it? I love British African cartridges, always have. Shockingly enough, its worked out great. That's about it.
I've been thinking of trying paper patching. I've been casting for years but never got into paper patched bullets. I typically use AA-5744 and closed cell foam rope filler when I use smokeless powder.
I guess what I'm looking for is some opinions on the primary advantages to paper patch bullets might offer for my particular situation.