ANSI/SAAMI Shotgun Pressure Specifications (Maximum Average Pressure in PSI) All Piezo measurements unless specified
Cartridge Maximum Average pressure
10 gauge 11,000 (all)
12 gauge 11,5000 (all but 3 1/2" mag)
12 gauge 3 1/2" mag 14,000
16 gauge (11,500 (all)
20 Gauge 12,000 (all)
28 gauge 12,500 (all)
.410 Bore 2 1/2" 12,500
.410 Bore 3" 13,500
Cartridge Class Shotshell
Multiply Max Average Working pressure by
Minimum Proof* 1.55
Maximum Proof** 1.70
* Min Proof values rounded UP to nearest 500 psi.
** Max Proof values rounded DOWN to nearest 500 psi.
Pete
