Seems JHCO50 Might not be to far off.
"This guy has a Winchester 21 collection that would rival a king."
http://www.winchestermodel21.com/page1.html
C&P
Bill Phifer on Preservation
"As I mentioned, I have never put oil on the exterior of my Winchester Model 21 shotgun collection.
I apply clear color paste Trewax (a brand name). Trewax has Carnauba oil in it.
There are more specific details, but basically I apply wax to the exterior of my shotguns – barrels and wood. Then after about 5 minutes I wipe the wax off with a soft flannel cloth (keep the cloth in a jar for the next time you need it). If I am going into the field I leave the wax on the exterior.
Many shotguns are ruined by oil applied to the exterior seeping into the area where the wood meets the metal and rotting the wood out. You do not have this problem when using Trewax which has Carnauba oil in it.
The wax will protect your shotguns from stray fingerprints etching a pattern into the metal and weather. Some wax will remain in the checkering – just leave it there or remove it with a very soft toothbrush after it dries.
I apply a light film of clear gun oil to the interior of my unfired barrels. I apply minimal oil on the interior mechanisms(firing pin, safety button, ejectors) using a needle oiler.
The inside of fired shotgun barrels require a different treatment. When you shoot a shotgun you fire a plastic wad through the choke constriction at extreme heat. The extreme heat generated by your shot will slightly melt the plastic wad and it will leave a film of plastic at the choke constriction.
The plastic film is all but impossible to remove using normal cleaning techniques. Thus, humidity can build up in this area and rust-out your barrels! If you are buying a used shotgun check for rust at the choke constriction.
Always use a gun case with a plastic zipper. A metal zipper will act like a saw blade. When you can, leave the gun case slightly open so air can circulate – just open the zipper enough so air can get inside to keep humidity and heat from building up.
Never slam a double home after opening the barrels. When closing your double barrels push the release lever just like you do when opening the barrels. Don’t slam the barrels home. Open and close your barrels by pushing the release lever.
Use a lightweight nylon gun sox when taking your shotgun into the field. A dog can jump on your gun or you could brush it up against a tree. I nylon gun sox will really help protect your shotgun. When you reach the hunting grounds remove the gun sox and put it into your pocket.
I’ve describe how I have taken care of my shotguns for over 30 years. I’m not telling anyone else how to take care of their shotguns.
Best regards,
Bill Phifer"