No over ball grease for me, my club has banned it.

We shoot down tubes (read 3ft sewer pipes) buried in a hillside. They used to use grease but over time it coated the tubes along with unburned powder. Finally one shot ignited the residue and sent a very spectacular ball of flame down the tube. Luckily the power of our extractor fans drew it away from the firing point.

No, I use 777 and lube my balls with alox. Brilliant, no mess and easy to clean. Purists frown on it because it is not in the spirit of original muzzle loaders. But hey, I hold my firearms for target shooting not to be a pretend Jesse James.