I saw it at the range a few times. Worst was when someone had their scope set way too low, and it was causing them to hit the concrete roof. Let off three shots, wasn’t even on paper, and then the next one keyholed. Hold up here, let’s twist this knob and try again.
Plus, even if it was that kind of nuclear-proof, all that really means is that it can take the pressure of nuclear explosion over its body. Devices based on point pressure, like the kind used in anti-armor rounds or bunker buster bombs, can and do punch through nuclear-hardened targets.