…..my only suggestion would be to put it into and out of a holster several thousand times (or some easier way) to get those front edges worn, like front left of muzzle, ejector head and housing, cylinder...
Your suggestion will sure give the look of a "well worn" SASS gun, no question there. Most 1st Gen Colts in reasonable and well taken care of condition are worn (and the finish missing)
mostly from cleaning and then the 2nd culprit is simply riding in a holster (along with the dust that accumulates while doing so on foot or horse back) not by going on and out of a holster.
Funny as the Bisley was my Grandfather's ranch gun for years. It was packed in a belt holster almost daily for years. Took it to a Colt Collectors show a few years back and over and over again I heard, "Amazing condition, so little finish and almost zero pitting!" Cleaning has likely worn out more Colts than actual use I susepct.