looking for total travel measure the cocking piece from the back before and after firing with a dial indicator
You need .250″ (+/- .005″) for constant consistent ignition.
this was copy/paste from another site. assume it to be accurate.
The firing pin in my Panda bolt has two different holes that are several thousands apart. I took the thing apart some time back and me not paying attention put it back in the wrong hole which lead to a very frustrating day at the range. I have also heard it said that some primers have a harder metal than others. Yours seemed to be hit pretty hard today. Let us know what you find out. WWE