Removing rust in barrel

[bearhunter]

Get a can of "KROIL", mix it 50/50 with "CLEENS" and swab th barrel liberally with a loose patch so that a lot of the solvent mixture stays behind. Let it sit for 30min to 1hour and run a brush that is one size smaller than you would normally use, one that you can pull back and forth in the barrel. Then clean with another soaked patch and repeat the process until satisfactory results are achieved. Might take 3-4 tries, but has never failed for me.

Kroil is usually avaiable at most gunshows or gunshops that are well stocked.
Kroil is short for Kreepy oil, it is one of the best penetrants I've ever used. It works better than any of the industrial products I've tried and doesn't appear to be toxic.
Kleens is available from the General Motors parts department for about $12/500ml.

I've cleaned up some really grungy, crusty bores, made that way by corrosive ammo, and they came out shiney. It and nothing else will remove the rust though not the pitting and every time you fire the rifle, it will foul terribly. DUHHH, Sorry for the obvious. bearhunter