Not good. CCI-200 are my go to primers . . . but I see you are beyond a primer issue.

A couple questions first - when you reload a case do you first clean the primer pocket? And are you hand-seating the primers so you can feel when they seat properly? Any grunge can keep a primer from seating, and some presses don't give you any tactile feedback using the "stock" priming arm. Then the firing pin pushes it the last bit when it strikes it but any movement wastes that much energy. But there is no possibly way that would happen eight-in-a-row. That's enemy action.

Here's a couple older threads

https://www.savageshooters.com/showt...ng-pin-strikes

https://www.savageshooters.com/showt...ng-pin-strikes