I've also seen them wear at the FP nose and create a burr which then pierces primers, ruins bolts (from primer flow) and often makes the rifle slam fire...
Faster lock time is best accomplished with a faster trigger like a Geissele DMR hi-speed.
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I am using a SSA E trigger from Geissele
But I will monitor the Firing Pin for wear, so far so good..........I still have my Colt Firing Pin as back up
all good info to watch for thanks