Semi related question: Any way to get welded screws out to use the same screw hole? Mosin Nagant ex-sniper, can clearly see the screw on the inside, no idea how deep the weld goes. Thought of drilling through the back with a small bit and then drilling from the weld side with a bit slightly larger or the same size as the screw until past the weld and then backing the screw out. Or would I be better off simply drilling new holes slightly off the original ones? I have a repro base and scope I'd like to mount on it.