Chrome lined barrel

[Frostbite]

I agree with all who said it is dirty and needs cleaning. The same happened to me when I shot slugs from my chrome lined barrel. Being new to shotguns, I feared I had permanently damaged it with excessive slug shooting (I now believe there is no such thing). Bronze brush, a quantity of G96, a lot of elbow grease any quite a few patches brought the barrel back to a mirror finish. Had I known a drill could be used safely before, it would have saved me lots of scrubbing! Drill usage recommendation duly noted.

 

[ironworkerwill]

I'd poke the sliver just to see if it would dislodge. Maybe, probably, hopefully it's lead or plastic. If it's not fouling, keep the piece to send back to the maker along with the pictures.

 

[Virginian]

A bore snake won't remove anything but powder residue. I consider them virtually useless for anything other than getting other things grimy dirty. I'm with rcmodel, give it a REAL cleaning. He has 5 more years of experience than I do.

 

[GARY R]

An update!! I read a few more forums and some people recommended a coiled stainless steal brush a.k.a "tornado". I finished cleaning the barrel, using a little gun cleaner, it came out amazing..mirror finish