I have a Browning Superposed with 28" F/M barrel that I picked up after Vietnam. When steel shot was mandated, I put it in the safe except for upland birds. Now I would like to add a 26" M/I barrel or with chokes and am having trouble finding one. Am I better off just buying another gun? I am told that Browning wants the price of a gun just to add a barrel. Any ideas?