While we are discussing the appropriate tool for honing, it might be educational to also discuss the pro's and con's of removing metal to clean up pitting. Especially in the case of damascus or twist, removal of metal just for cosmetic reasons might not be the best idea since it might also reduce barrel strength and may change the choke, though it certainly makes cleaning easier and improves the looks of the gun.
I always worry about that when I buy a damascus barreled gun with slick, shiney barrels. Should we just leave cosmetic pitting in place sometimes???...Geo