Why don't you try an H&R Ultra Slug Hunter in either 20 or 12 gauge? They are relatively inexpensive and are one of the most accurate, if not the most accurate slug guns on the market. You can get them in a different configurations, from a plain stock to a laminated thumb hole stock. I have a co-worker that loves his 12 gauge. He puts 3 shots in under 2" at 100 yards every time. Got his deer with it this year, one shot, one deer.
Good Luck and Good Shooting