I have an old Wingmaster that was born with a barrel chambered for only 2 3/4-inch shells. I have picked up a new(er) barrel with factory rifle-sights and 3-inch camber I really like and want to use it on the old Wingmaster. The new rifle-sighted barrel has a chamber that will fit both 2 3/4 and 3-inch shells. Not that I shoot much if any 3-inch ammo, but as the barrel is chambered for it... I figured I'd see if I can safely make the gun run 3-inch ammo. Is there any if at all modifications needed to be made to the gun so it can run 3-inch ammo?