You'd better be careful, I find those Scotchbrite pads more agressive than steel wool when spin polishing my rifle brass. AAMOF I'v gone back to OOOO wool. The only thing I would consider doing to my barrels after a thorough conventional cleaning is to take a bore mop with some polishing compound on it like what you'd use on a car. OOOO steel wool wouldn't be too bad as long as you only use it a short time. JMHO.