Home Forums Reloading Big Game Rifles Cratered and Pierced Primers - Advice Needed

Correct and not only are the points on the case where the pressure is taken in diffrent locations the pressure traducers are themselves designed differently.

So again forget NATO pressure standards, we are Americans, our speed limit signs are in mph and not kph and the American SAAMI decides the standards of testing here.

And our Army doesn't separate "HOW" the chamber pressure are taken. Meaning in the manual below the copper crusher method and transducer method are just listed as PSI. I have an older milspec document like I posted before that lists both methods and the pressures of 52,000 cup or 55,000 psi.

Below chamber pressure taken with newer transducer method.



And chamber pressure taken with the older copper crusher method.