Just looking for some advice on a future shotgun purchase. Im looking for a semi auto shotgun that will work with 3 1/2 inch magnum shells and still work with most 2 3/4 inch shells. I have done some research on this and have found that not many guns are capable of this. I would not mind being limited to using heavy 2 3/4 shells but i do not want to be limited to only 3 inch and larger shells. My price range is anything under $1400 for a new gun and around $750 for a used gun. Any advice would be greatly apreciated.