So, I was given an old Remington 870 wingmaster, and when I was cleaning it (evidently the first time it had ever been done properly) I found a bit of a gouge on the inside of the barrel about a quarter of the way down. It was enough to grab a bit of fluff off of the cleaning patch. Any chance the barrel is salvageable? I know a new barrel isn't that pricey, but I wouldn't mind keeping the gun all original if I can.