Bushmaster-- In my Walker, I use 25g of 3F Triple Seven, then lubed cookie and then the ball. Snugged down all the way. #11 CCI caps. Like you I'm a devotee to Ballistol with all my firearms. The Walker is the only gun I own where I don't use a boresnake-- these BP revolvers are a mess to clean up so I use a typical wad on short dowel for cleaning. Solvent, Rem Oil -- same in the cylinder. Once the big pup is clean as a whistle the outside gets the Ballistol.
.02 David