H&R Ultra, either in the 12ga or the 20ga. I shoot the 12ga and both of my boys shoot the 20ga. 2" groups with both shooting lightfields at 100 yards, both are capable of 200 yard shots with the faster ammo. The 20ga is a flatter shooting, so if you are wanting to stretch your shots, I would go with the 20ga. With out a doubt the best dedicated slug gun on the market.