For under $1,000 I would be patient and look for a clean Winchester 101 made in Japan ( Kondensa Ltd.) That's if your looking for a field gun??

Most 28 inch guns will be choked modified and full, you can have the shotgun re-choked Skeet I and Skeet II or improved cylinder and light modified ( same as Skeet II) and go hunt.
Re-choking is about $50.00 per barrel.

Doc