My way:
Each and every one that comes to live here gets "Ralph's Bath".
That goes like this: The bores (barrel and cylinder) are made SQUEAKY CLEAN ---no lead---no nothing! The cylinder face and the aft end of the barrel are made like new with a bronze bristle "toothbrush" from Birchwood Casey and Hoppes.
The gun comes all apart (except for barrels and action studs), and goes to soak in Mineral Spirits for 2-3 days. Then everything gets scrubbed to within an inch of its life, rinsed with clean Mineral Spirits, and blown dry with DRY high pressure compressed air.
Then everything gets hosed down with CorrosionX, and left to soak for 2-3 more days. At that point, all the CorrosionX that will come off gets blown off, and the gun gets put back together. (The exterior is wiped down with Hoppes, dried and polished (because there's nothing uglier than a blued gun with oil stains on it), and put on a shelf in the display case.
There were guns in that display case for over 30 years with no further attention other than an occasional dusting with a vacuum brush because the display case wasn't air tight. I reckon the CorrosionX gets the credit for that.
Ralph Tremaine
OH-----and one other thing: The windage spring in the rear sight of a King Super Target Triple Lock is remarkably similar to the S&W spring in the cylinder stop latch assembly---similar enough that I put the S&W spring in the King sight---where it fit---and worked----never mind assembling the sight was accomplished with some difficulty ----and that minor detail blew right by me. The King spring also fit in the cylinder stop assembly-----fit, didn't work. The dawn comes!