doublegunshop.com - home Forums General Discussion DoubleGun BBS @ doublegunshop.com Light film of rust in barrels at breech.

I live in the UK, so fairly damp climate.
There are two key things here;

1: get it clean (even modern powder residue can be a bit corrosive in damp conditions because it attracts water), which I do in three stages; first some tissue/paper pushed through to remove the worst debris, next some solvent cleaner (I use Young's 303) and scrub with a phosphor bronze or brass brush and leave for 30 minutes or so - then another scrub, and finally clean out with tissue/paper until it comes out clean.

2: now it is clean, to protect it I spread a VERY THIN film of oil/preservative. As has been said, motor oil is OK, but I prefer Rangoon oil. I do this with either a fibre brush, or woolly mop. The coating of oil left should be very thin and never enough to run if the barrels are stored vertical.

It isn't really in the products (most are pretty good), but in getting clean and leaving a very thin film to protect. This last is critical as a thin film of oil keeps the metal away from damp in the air.