I would HIGHLY recommend a look at Harrington and Richardson (H&R) VERY high quality slug gun for the money....

Just did a quick search, but something along the lines of this. My friend has the 20 gauge and its plenty..

http://www.gunbroker.com/Auction/ViewItem.aspx?Item=194781397

Correct me if I'm wrong someone but i believe that they are owned by marlin firearms.