I think you should have started with the .530 balls with a .015-.018 patch. You may have to use a .010 patch with the .535, and those are kind of thin. I always got burned holes in .010 patches with hunting loads unless I used a wad. Just one more extra step and expense.

Harder to find real BP. Most of us buy it online. If you really want to do like they did in the old days............you'll use BP. As a perk for doing it right. BP works better in sidelocks.