Steve is spot on regarding bulge repairs. Ribs on or ribs off, swaging even a small amount of metal down is not an easy or pretty task. Regarding shooting a gun with a bulge or a repaired bulge, ask yourself would you feel safe driving a vehicle on a bulged tire? Its just not worth the risk. I have a small shadow box on the shop wall with a variety of barrel bulges, bird cages, splits, stuck bullets, and blow outs just in case anyone needs additional convincing. Good advice once given by my father, if the report doesnt sound right or the recoil doesnt feel right, stop shooting and check your barrel!