There was no SAAMI spec fo this cartridge that I know of...
Accurate Arms Powder shows:
This proprietary cartridge was developed
for Irwindale Arms, Inc. for use in
their auto loading pistol.
The highest loaded pressure for the 10mm Magnum is shown as being 43,200 CUP for the Nosler 170gr @ 1615fps as tested in the IAI guns
Other test for guns other than the IAI
were kept below the 39,000 CUP pressure.
Don't confuse reading of CUP with pressure readings listed as PSI!