I am curious to understand why the damage is the same on both barrels. Both have separation of the locking extension from the barrels. Lumps are solid as are the remaining rib-barrel weld. I own Remington, Lefever, Parker, Fox, and many JP Sauer from the same vintage. None show this type of weakness in the rib extension. Weak solder at the factory perhaps? Or digesting high pressure modern smokeless loads?