Very true that many calibers perform poorly with steel cases. Fortunately the AK does not, as such ammo was designed with that platform in mind. As you probably know, Berdan primers and cases are not "communist" made. They are used by most of those countries and many others, true, but the system itself was designed by an American.
Absolutely correct about the priming compound from what I have read, but that was the older style compound, the newest style is not said to have the drawbacks that plagued the original cartridge.
The hydraulic decapping method is very easy and can keep up with a high output. Also we have a large active supply of primers.
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