While packing up at the end of a range session, I spray the revolver down (including the bore and in the cylinder) with Moose Milk. BTW, my recipe for Moose Milk is simpler than the one posted above: 3 oz of Ballistol with 21 oz of water, mixed in an old Windex spray bottle.
When I get home I remove the cylinder from the frame, the nipples from the cylinder, and the stocks from the frame. Everything but the stocks goes into soapy water. I scrub each part in the soapy water and run patches soaked in the soapy water through the bore and into the cylinder until they come out clean. As I finish each part I leave it in the water so as to prevent flash-rusting. When done, I fire up my air compressor and blow-dry the parts, spray off the lockwork with WD40 followed by Rem-Oil in through the hammer, trigger, hand and bolt openings. I then reassemble the revolver, greasing everything with Crisco as I go, and finally use a Rem-Oil soaked patch in the bore and in the cylinder.
So far, none of my cap and ball revolvers show any rust, except for a tiny spot on the nottomof the loading lever of my 20-year-old 1860 Army.