Mick

When these conversions were made were "oiled" proof pressure rounds used or had the switch been made to the "CIP" standard of non-oiled proof test rounds?

Translation to American English and pressure standards.

Requiring a minimum mean proof pressure of 5190 bar or 75,274 PSI transducer method.

CIP approved ammunition with a Maximum Average Working Pressure of 4150 Bar or 60,190 PSI transducer method.

19 TSI is equal to 38000 CUP or Copper Units Pressure Britishicon axial method which requires 10% to 20% to added to equal American radial method of CUP. (Between 41,800 and 45,600 CUP)





NOTE: 50,000 CUP equals 60,000 PSI transducer method.