At six-two in height and 220 pounds, oklahoma caveman, you ought to be able to carry and conceal a shotgun with ease.
Basically just curious how hard a revolver with 4" barrel would be to conceal and what yall have found is the best method of carry to conceal said revolver.
Seriously: unless it's drawn tight, any piece of cloth denser than gauze ought to conceal a four-inch revolver. A plain white cotton T shirt, as long as its lose, will keep a gun from being readily identifiable.
Hard to believe?
If someone is actively looking for a gun, he can spot it, but a.) very, very few people look for guns on other people, and b.) even if a revolver's cylinder is an inch and a half thick, that doesn't result in much of a lump.
I don't recommend just a T shirt, but any ordinary shirt will do the trick unless the fabric is pulled tight over the gun. When I carry concealed, I normally wear a jacket, but that's primarily because a.) I carry outside rather than inside my belt and trousers, and b.) I need pockets, anyway. Since you live in Oklahoma, where concealment is required for whatever stupid reason, you may find an inside the waist band holster results in a thinner lump.
The main event isn't how we carry, but whether we do. May you always have a gun near to hand, and may you never need it!