I just picked up a Thompson Hawken 50 cal, and another made in Italy that look almost exactly like the thompson. The exterior of the barrel and the wood on both guns are excellent, the only problem is there is some rust inside the barrel of each, doesn't appear to be very bad. For the price, I stole both of them, rust and all. They haven't been shot in a couple of years. Does anyone have any suggestion for a safe way to remove the rust from the barrells of them. I have washed them out with hot soapy water and have plugged the nipple then fill the barrells with penatrating oil until I can get a good suggestion.

HELP PLEASE

Swatts