I just got a gun and it is an old mauser that was drilled for scope mounts. Well when the "smith" drilled it he drilled all the way into the chamber. The gun shoots great and shells eject with no difficulty at all. But my question is that if there is a way to repair the place that he drilled too deep? Each piece of brass has a spot showing where it expands into the hole slightly. Again shoots great and brass ejects easilly. It is just that i know it is there