Hi everyone, I just shot a box of shells through my Mossberg 590A1 and finished cleaning it, but I can’t for the life of me get the barrel clean. I haven’t had this issue with any of the other shotguns I was cleaning. I ran way too many patches soaked with Hoppe’s No.9 and can’t seem to get the barrel clean no matter how many patches go through. I’m thinking that maybe the barrel has some coating on it and as I’m cleaning I’m rubbing it off. Or maybe that’s just how the barrel looks? Any thoughts on this?


















































