I’m currently waiting on a 1885 BPCR in 45-70. To start out I want to shoot smokeless out of it as I’ve never shot black before. I’ve also never used fillers and don’t want to ring the chamber. So I’m looking for 100% to compressed loads. Because the barrel is 1:18 twist and throated for heavy bullets I’d also be looking at 500ish grain bullets but I’m open to anything just because I’ve never done it doesn’t mean I won’t try. So what’s everyone’s thoughts? Wayne Mclerran states that the barrel should be broke in using jacketed also so if anyone has some j word loads that would be great too.