Yes, it may punch through a defective primer or the primer may blow out the side if it was crimped or improperly seated. A fairly rare occurrence but can be spectacular and destructive when it happens. It has been known to blow out extractors or a chunk of the bolt face rim.
A relieved firing pin has grooves cut in the forward portion of the pin to allow the gasses to vent back through the firing pin hole. I would bet Tom Heller (Lugerdoc) has a whole Mason jar full of them (and he will sell them!)
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If it's made after 1918...it's a reproduction
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