so I bought this sight unseen awhile back. Took it apart to check and clean it. Looks to be missing 2 pieces of metal on the barrel. My guess is not safe to fire. What could have caused this kind of damage?
Looks like a standard Winchester 1200 barrel (Which is what the Sears 200 is) and as Sharps40 stated the extractor recess is what you are seeing. Below is a better photo of the Winchester Barrel Cuts