I think if you ask 10 muzzle loaders how they clean their guns you will get 15 different answers.
I have a big pot and several old bath and wash towels dedicated to the chore. Fill halfway with water and a splash of dish soap, and onto the stove. While things are heating up the barrel comes off the stock and the nipple comes off the barrel and into the pot. When the pot reaches a rolling boil, off the stove and into the sink. Lay down a towel to keep things from banging around. Breech plug end of the barrel into the pot and with a tight patch draw the hot water in and out until the barrel is too hot to touch. Be sure to include the muzzle end. Out of the pot and on to the bath towel, run repeated dry patches until they come out dry, last couple wadded up and shoved in with the patch puller to get down into the powder chamber, then finish with a couple of passes with light TC Bore Butter on the patch. Moisten a corner of a towel and wipe down the hammer and lock. Wipe the nipple clean. Blow through it and hold up to a light to visually confirm it is clear. Put just a scant touch of the bore butter on the nipples threads only, being careful not to get any on the bottom. Reassemble, wipe down with the bore butter patch and back in to the gun safe.
On the next use it is ready to load as is.
Just my 2 cents.