I use hot water to clean my percussion pistols. I use a cottage cheese container, filled 3/4 full of as hot tap water as it will get, drop the cylinder in, damp a cloth patch on a 38 bronze brush (for a 44), run the patch thru a few times, change to a cleaner one, balling up some patch on the end to clean the bottom of the chamber, moving on to get all chambers. After the cylinder and barrel are clean and hot, I slap the cylinder against my palm on a paper towel or rag to get the nipples cleared and leftover water out, run a series of dry patches through the cylinder and barrel, and set them aside for a couple minutes. I use a damp patch on the brush to clean the crud off the frame, and patches to clean the hammer and hammer groove, dry it with paper towels or rags, and set it aside. I lube the cylinder pin, lightly oil the barrel bore with olive oil, assemble the cylinder and barrel back on the frame, load the gun, and drop it back into a holster hanging by the door, or on it's nail on the wall. They get a couple drops of gun oil into the lock parts now and then, but don't get taken apart very often, as in about never. They seem to work perfectly when I shoot them, up to a year or so later in some cases, tho once in a while there's a short hangfire after sitting around loaded for a long time (many months/year or more).
Some may notice that I didnt mention oiling the gun on the outside, or inside after cleaning, other than lubricating the lockwork now and then, and olive oil in the bore. It may be the dry climate I live in, but I just havent oiled them, and they've been fine. I may wipe them down after being out in bad weather, but oil attracts dust here, so I just don't much.
I tend to get it done quickly, tho I don't recall that I've timed it. I think it may take 15-20 minutes from dirty to reloaded and done.
I wash out the dirty patches with dish soap, air dry them, and reuse the same ones mostly when I'm shooting much.