WHY does this have to be so hard-BUT I might have something important here:
The B&P Speed/Pressure Chart shows the 16g F2 Classic to have a psi of 9,867 BUT ACTUALLY TESTING by Armbrust showed it to be 10,500 psi, and I found the load quite 'hot' in terms of recoil (I know, I know, pressure does not equal recoil!)
It looks like B&P is not using the transducer SAAMI method to report pressure, which explains why all their BAR-PSI data fits the 1 bar=14.50377 psi conversion.
I'm thinking the bottom line here is going to be:
1. Ain't no way to get from the British LUP/CIP Crusher BAR/PSI to the Piezoelectric transducer SAAMI PSI.
2. A service pressure of 3 tons per sq. in.= Birmingham/CIP proof pressure of 850 kg per sq. cm. (BAR)= SAAMI proof pressure of 13,920 PSI= SAAMI service (using) pressure of 10,730 PSI= 650 BAR CIP service pressure.
3. BUT guns proofed at 3 tons service or 850 bar proof were designed to shoot shells at SAAMI pressure less than 8,500 psi.
Last edited by revdocdrew; 04/01/07 05:00 PM.
