Some roll the balls in Lee's Liquid Alox for leading prevention. I haven't done it, but with smokeless loads, it will certainly help. With BP loads, Alox will not soften BP fouling. A softer BW/Vaseline mix might work well- like 40/60, BW/Vas.

I haven't had any luck with any lubes using Olive oil - when using black powder as a propellant. More BW, less oil stiffens the mix, of course you know that.

You adjust the wad or wad height, to get the right height for cimping, Robert. In 2 3/4", I was able to use the lighter 12 bore 5 1/2 dram load (black powder) and fold crimp the cases. With 7 drams, I had to use a partially tapered fold crimp which worked and stayed in place, although I think there might have been enough material for a roll crimp.