There have been several threads about proof pressures and CIP vs. SAAMI pressures. Larry Brown understands this much better than I, but it is all summarized on this thread http://www.16ga.com/forum/viewtopic.php?t=3428
It is clear from the B&P speed-pressure chart that they simply coverted BAR to PSI using the standard formula 1 bar=14.50377 psi, which does not give the actual PSI as measured by SAAMI standards (piezotransducer) Unfortunately, there is essential NO formula to convert BAR expressed as LUP (CIP) to PSI (SAAMI). LUP + 1000 does not reliably predict the actual piezoelectric transducer measured pressure.
Testing of 16g B&P, Fiocchi, and GameBore loads by Armbrust showed the psi to be significantly higher than what the manufacturers reported. One could inquire of Rio, as I did of B&P, if the pressures were measured by CIP or SAAMI standards.

Last edited by revdocdrew; 05/23/07 04:12 PM.
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