And our Army doesn't separate "HOW" the chamber pressure are taken.
What??
I'd beg to differ with you. SCATP specifies very exactly how chamber pressures are measured, among other things.
It sounds as though you do not understand "standards" at all. A standard specifies
exactly how something is to be done and exactly what equipment is to be used. Standards may change over the years and specify different equipment and numerical values (such
as pressure, for one), but that's why they put dates on them.
The military specifies that when testing the ammo the copper crusher or transducer method may be used. As you can see from the sheets above one is listed as 52,000 psi and the other is 55,000 psi. Meaning the 52,000 psi reading was tested using the copper crusher method and the 55,000 a transducer was used. And the Army uses psi in both pages.
So I do understand the standards, BUT the Army doesn't write cup after the pressure figures if the copper crusher is used.
Therefore I understand 52,000 cup is the same pressure as 55,000 psi and the Army does not separate which method was used.
