Questions
Was all the ammunition loaded with CCI primers?
Where different brands of cases used?
Where all the cases sized the same way?
Were all the primers seated the same way.
If everything was uniform then email them at their CCI website and tell them the problem. Your problem will be identifying the lot number and date of manufacture.
Good luck, years ago I had some Remington primers that were recalled that ruptured at the edge and scored my bolt face. Remington replaced the brick of primers and replaced the rifles bolt for free.
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