the original specialist
The heyday of the cap and ball revolver was cavalry use in the Civil War. Can you imagine Jeb Stuart's troopers packing Crisco, or pork lard, all over the front of their cylinders? Might sit there in the morning, but at 4pm on a hot August day, it would melt and turn into a gooey mess.
Crisco on top of the cylinder, one of the great fairy tales of muzzleloading