Anybody been to SoDak Sports on the west side of Aberdeen, South Dakota? A GREAT selection of both new and used guns, but especially shotguns, as that's big-time pheasant and waterfowl country. Bought my first 10-gauge double there maybe 20 years ago--but haven't been back since.
SoDak also has a store in Mitchell, but I haven't been to that one, as apparently it's newer.