Over the years I have broken three hammer mounted firing pins. In addition, I had a Ruger Single Six break a frame mounted firing pin. The broken pin worked well without me noticing it until it had peaned each chamber. I removed the burr, and it still works well after more than fifty years after (after I replaced the broken pin which is NOT easy to do.

So, I now NEVER dry fire without snap caps. The tip to use wall anchors as snap caps for rim fires is an excellent one. I couldn't believe how well they fit and worked until I tried it several months ago.

FWIW
Dale53