Maximum 2& 3/4" load service pressure at this 6.4" point was 1.8 tons PSI lead crusher,4030 psi lead giving a proof cartridge requirement of 5250 psi lead at 6.4"

I'm really confused. CIP standards are clearly measured by piezoelectric transducer pressures, not lead crushers. 1.8 tons converted to piezo psi by Burrard's formula is 4928 psi.

Without knowing the pressure curve of the powder used by the Proof House, I don't believe we can KNOW the target pressures at 6.38"