I’ve only recently got back into BP revolver shooting. I’m currently using home made lubricated wads instead on lube on top of the ball. I soak a 6mm felt with a melted 50/50 mixture of Beeswax and Crisco and punch wads from it when dry. I’m also using a 6mm dry wad between the powder and lubed wad so 12mm of wad in total. So far this has been a lot less messy than lube on top of the ball but there seemed to be minimal fouling and it was easy to clean. It also means not having to faff with lube on the firing point.