Her thoughts on primer wipe got me thinking. I suspect that striker fired guns are more prone to this than hammer fired pistols with inertial firing pins. Here's my theory.

In a striker fired gun the firing pin is not withdrawn until the action cycles. If the striker is still protruding when the case hits the ejector, you get primer wipe.

With hammer fired guns the return spring on the inertial firing pin will tend to withdraw the firing pin before the case gets to the ejector, so no primer wipe.

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