I bought this barrel years ago where it has rested in my box of barrels. Obviously someone used it as a hammer and I'd like to repair the damage if possible. If it weren't rare I wouldn't bother. Once, I saw an article somewhere of a gun writer guy who tig welded dings like this but, I dunno. As I remember, he didn't use anything to prevent scaling. Matter of fact, I once watched a gunny solder on a sight in person using serious torch heat with no scaling prevention. #industry source