Gentleman:
A most alarming sight, what appears to be rust in the barrels of two rifles. They are thin streaks, so I am unsure if they are really rust, but the color is right. I have some JB Bore paste, and can scrub away (if this is the right thing to do). I also have some cold blueing to re-blue the bore, but again am unsure if this is proper. The advice of those with experience is appreciated.
