It depends on the type of raccoon you are dealing with. A broom or airsoft gun will work for most. A few however is going to take more that a 12g I’m afraid…
Hard to tell from the pic. Looks like the edge of that ledge from the milling but would have it checked out rather than risk it. If it was cracked there it would be under or at least at the edge of the rear sight rather than the sloped back.
If I understand the OP correctly, the bbl popped .. he sent it to Benelli, they said it was the ammo but wouldn’t give the bbl back. The ammo co said they needed the bbl to determine if it was their fault but he can’t because Benelli wouldn’t give it back so his only option was to pay out of pocket to get a new bbl.