Well I have not used real black powder for a very long time but when I was a kid my dad always used to make me clean his after shooting with just plain old soap and hot water in the kitchen sink. After everything was cleaned up a light coat of oil was applied and we never had a problem. I had a chance to use and hunt with some tripple7 powder about 7 years ago in a muzzleloader and that stuff was great for cleaning. Again just a patch soaked with water and the gun would be clean after a few patches and never had any rust issues at all.
I have always just cleaned my black powder firearms in hot water and Pinesol. Both cap and ball revolvers, inlines, and traditional muzzle loaders. With the traditional I wipe it down with Thompson Center Bore Butter but for the others I just apply a little bit of oil and have never had a problem. Now when I say hot water I mean boiling hot water. It will get the metal so hot that you have a hard time holding onto it and once the metal is that hot any water that touches it will evaporate quite quickly.
Hunting can be slow and frustrating if Mother Nature throws a warm hunting season at you. But things can take a drastic turn for the better with the onset of a cold snap. Whether you get snow or just a good, prolonged cold front, the hunting can improve on a dime. But cold whether can also make certain parts of the hunt more tedious. Here are some things to keep in mind when your prayers for cold weather finally pay off.
You can see a your quarry's breath when it is cold outside...