I have a remington express super magnum that came with a 28" barrel that takes up to 3 1/2 inch shells. I just got a hold of a smooth bore fixed choke barrel that I cut down to 18.5 inches to use as a home defense gun. That barrel is only for 2 3/4 shells. Is there any way to have the shoulder reamed down the bore 1/4 of an inch to allow the barrel to safely shoot 3" shells? The receiver is rated for them, but the barrel obviously is not. Id like to change that somehow, if it is at all possible. Am I hoping for something that is impossible?