I always use genuine 3f in my revolvers, but because it is far less corrosive, I keep a pound of 777 on hand for extended carry. 777 is very sensitive to oil fouling, so before loading for extended carry, I put a charge of 777 in a single chamber, cap it and shoot. Repeat this six times, until each chamber has been fired. If you attempt to charge all six, they will all go at once because there are no bullets to shield flashiver. After burning the oil out of the chambers, I remove the cylinder, and wrap a patch soaked with olive oil around a bore brush, and run it through the bore. The third patch should be pretty clean. DO NOT CLEAN THE CHAMBERS. I then wipe the outside surfaces with a patch of Birchwood Casey Sheath. After you have wiped the recesses around the nipples, use a pipe cleaner dipped in melted bees wax to put a thin coat of wax around the outside of each nipple. Put the cylinder back in the revolver, and load it, placing a wad dipped in bees wax under the ball. Cap the nipples, and seat them firmly (but not too firmly) with a piece of wood. I have carried a revolver loaded in this manner for as long as two weeks, rain and shine, and when shooting it empty before returning home, I have only had one misfire, and it went on the second try. If you decide to do some recreational shooting, you might want to put a little of your favorite lube over the ball, because the bees wax is only there to seal, and does little to keep fouling soft. I carry a baby food bottle with a dozen patches siaked with oilive oil and a pistol rod for use in the field. After shooting, do the same as you did the first time,(omitting the wax on the nipples) but wipe the outside with the olive oil patches you have along. Clean it properly when you get back to where its feasible.