OK, with Kevins invaluable help I now knnow I have a CZ52.....
I missed that, disregard my other comments as I was thinking 9mm in a Makarov.
Back around 1996 at Quantico, one of my Marine buddies brought in a CZ52 and some 7.62x25 ammo he picked up at a gun show. We shot some of it at a piece of Class IIIA ballistic glass. It went right through. Neat little round.
9mm would be probably be plenty safe in the CZ52, if it functions smoothly.
