I bought a cheap 12 gauge Single Shot H&R shotgun from an SGN member, I wanted to cut the barrel down to 18", coach gun style. I liked these guns because they have the "old west" look to them. With the Color case hardened receiver and Schnabel fore end, they just have that "look"
So I decided to reblue the barrel while I was at it. Here is a comparison shot of the newly shortened barrel next to the original part I removed. This is just a 600 grit finish