Thanks! appreciate it. Always been curious about that action. I wouldn't doubt the pressure of that destructive test of the Mexican Mauser may have exceeded 100,000 psi. Even now, after looking at various burst chambers and actions, it remains a mystery to me why that action/chamber didn't burst. I currently load for an older Loewe Chilean Mauser, so have an interest in all such info on these older actions.458, I have a 36 Mexican. Put it on the tester last week and got low readings. Tested it in three places. I will test it again this weekend.
PS we both were posting at the same time, I will merge both posts and print and put in my notes. Good info you put in your post!