Thread: What causes this ?

Not sure if this is "light strikes" or something else.

Every now and then I am getting a dent in the primer, but no kaboom. Basically just a click when I pull the trigger. Happens randomly, maybe once every 20-30 cases.

Rifle is a Savage 16 with Accutrigger. Trigger is set to lightest pull.

Case shoulder measurement compared to fireformed is 0.002 thou less.

Any suggestions or advice appreciated.