OK, then!
Have you shot any over a chronograph?
Just got a PPS43 pistol, but it has a bit longer barrel than the various pistols. Maybe a CZ52 (or a bring-back TT33!) will show up some time soon, and then a test of various ammo types could be done. I think there's a 1000 or 1500 rounds of Czechstuff handy- Don't remember what else...