[Whipper]

What I do is, disassemble the gun and put in a dishpan with hot soapy water. Then use a nylon brush to scrub all the parts down, then I rinse them in hot water and lay them out on a rag. Then I run a bore brush through the barrel, and then I use a patch to see how clean it is. Keep doing this until it is clean. Then I lay all the parts out on a rag, spray it all down with Birchwood Casey’s Sheath Barricade, soak a dry patch with the stuff, and run it through the barrel and cylinders. This will displace any moisture left in or on the gun.
This works for me. No rust or corrosion.