CraigC
Sixgun Nut
That has all changed. The .357 was originally well over 40,000CUP and was changed to 36,000psi. The .38Spl was not always the 17,000 and 18,500psi it is today.I have heard that before on the internet and yet despite several years of searching I have never found proof that SAAMI changed anything related to 38 Special or 357 Magnum. The only change has been the introduction of 38 Special +P. If you have documented proof of your claim I would love to see it.
Additionally, the .44Mag was originally 43,500CUP maximum and later reduced to 36,000psi. Before anybody goes on about how CUP and PSI do not correlate, that IS a reduction.