I need some help. Usually, I welcome educated conjecture regarding a general topic, as it is often correct, and regardless, many times leads to further, useful research that was not originally thought of. However, the following are specific questions and I need specific answers, hopefully answers that are known to the respondent thru research. I could find little or nothing on the topic.
How are Russian (USSR) military Makarov 9 x 18 mm proof cartridges identified as such? Colored tip? Color of primer and case-mouth seals? Other markings or colorations such as plated or blackened case, etc.?
What is the chamber pressure of the Russian 9 x 18 mm Proof Load, preferably expressed in MPa or in PSI?
What was the normal proofing procedure; was every pistol proofed, or was it simply one out of a specific number (one out of three, one out of five, etc.) that were proofed. How many proof loads were fired in each pistol proofed (normally it is one or two).
Was there any specific marking applied to the pistols to show they had gone thru proof?
Any help will be appreciated.