It don't look bad at all. I would do a terrible blue job on it to give it that antique look. With that short barrel I don't think you will be happy with the shot pattern. I shoot #9 out of my NMA Sheriff at rats in the cow pasture. Lets just say I don't have to aim much LOL, I just point it in that general direction. But its fun shooting them off the 4 wheeler. I've never noticed any ill effects to the rifling. I melt my home brewed lube and drop the shot in it. Then spoon it out and make sure they are seperate on a paper towel to cool. So every pellet is coated with lube.
"You're so drunk you cant hit nothin, In fact you're probably seeing double"...."I have TWO GUNS one for each of ya"