Federal Primer Packaging

[Suther]

Id start with checking your bolt / firing pin.
I exclusively use CCI primers 34s, 41s, BR2, BR4 and 450s. 20,000 rds at least loaded and not 1 failed to go off in 15 years

I've gone down that road already. There is nothing obviously wrong (everything has been properly cleaned & lubed and the gun works great with factory ammo and handloads with federal primers), so I can either throw parts at it hoping something changes, or I can start modifying things, or I can just not use CCI primers. After careful consideration I settled on the last one.