I had one glued up professionally and shot at least a few flats of low pressure Polywads through it afterwards without issue (before selling it). It was also a featherweight which I believe has even less material in the stock head area than a regular frame. Maybe just stick to low pressure loads if you are concerned about cracking? If it cracks again, it can always be dipped in acetone and reglued I would think as well. Wouldn't sweat it too much on a field grade gun.