Bear Grease
I think a lot has to do where you live and how humid it is. Here I warm up all the metal parts, barrel, lock, furniture if iron and rub on bear grease. Make sure the bottom of the barrel and breech area gets a good dose and put the gun back together. I've only had to do this procedure once per gun. Once the gun is cleaned, I have a thinned mixture that I load up a couple of patches and swab the inside of the barrel with. After that I use an old shaving brush with Bear Oil on it to brush the inside of the lock and the outside of the barrel. Never had a problem with rust. :thumbsup: