Around 1968, Dad brought home a Replica Arms (Uberti) 1861 Colt Navy. At the time, the common wisdom was to load the cylinder, then goop up the chambers over each ball with Crisco. It was supposed to prevent chain fires and also keep the fouling "soft". A few decades later this has been proven to be largely BS, chainfires originate at the nipple/cap end, and excess lube of any kind attracts and holds burned powder residue 'fouling'.
I have that 1861 Navy today & it shoots and looks like almost new.
For muzzleloading rifles, I load with a 'dry lube' patch; for cap & ball revolvers I use either prelubed felt wads with as much lube squeezed out as possible, or else a paper wad with a minuscule amount of beeswax & tallow lube folded up inside it. Fouling is negligible. Somewhere I have pictures of my stainless ROA after 72 rounds (12 cylinders) of shooting. You can clearly see that both frame & cylinder, as well as each chamber is stainless steel. Powder residue is negligible.