New 6.5G Build and Pierced Primers

[VASCAR2]

The PPU primers look like small rifle primers to me as they seem to be the same size as the Hornady SRP brass. The recalled PPU ammo all had large rifle primers. Might be a combination of factors like short chamber, hot ambient temperatures or an out of spec firing pin, firing pin hole. The bolt face and firing pin might have out of spec firing pin protrusion as mentioned before.