I found that the chamber on my Browning 1885 B"PCR 45-70 was 2.125". So, I ordered some 45-90 cases and cut them back to properly fit that chamber. I seated the bullets to where I always did with the shorter W-W cases and by doing so, of course, the drive band was engraved by the lands. I thought that could be a plus but it wasn't. Three times I tried making it work thinking my glasses were at fault and got another pair after the checkup. It did no good. Groups were still not as good as with the shorter cases.
Apparently this rifle doesn't like it's bullets to be engraved so, I'm going back to the somewhat shorter W-W cases. I've seen no evidence of any problem in the leade area and groups are so much better. The target below was typical of what I got today with the longer, trimmed back cases. The target below that was the same load, same bullet but with W-W cases. That's four shots and a fouler. I can't ask for a better group than that. I wouldn't have thought it would make that much difference but pictures don't lie.
BTW-Thanks to Don McDowell for the recommendation of Olde Eynsford powder. I tried it today and it did almost as well as the Swiss 1.5 that bottom group shows and is cleaner than Swiss-not by a great margin but noticeable. I found as he mentioned, you have to increase your charge by about two grains to get to the same point on the target as I did with Swiss.