Shootall: thanks, that's very interesting about the 327 pressures but it is a straight-cased magnum cartridge so I s'pose it should have the attendant high pressures of a magnum cartridge regardless of the bore diameter.
bckskin: either/or, your preference. Love my Tok, felt the CZ too big to be comfortable, roller block system not any stronger than the Tok design. M57 has one more orund, so stock up on M57 mags as I don't know that the TT33 Tok design magazines will fit - maybe they will??
Ammo: Sellier and Bellot, reloadable, new manufacture, factory specs at 1400'/sec from the Tok barrel; nice stuff. PRVI - also good stuff, right at the same velocity range. Wolf - haven't tried it, don't know but it's commie type manufactured pistol ammo for commie style pistols, so it oughta work; velocity has to be up there too and it also comes in soft point.. Winchester wants both yer gonads for a box of their White Box ammo , which is crap. On the custom side, Ron Reed a supporter on Greybeard and a custom ammo maker produces ammo spefically for both the Tokarev and the CZ pistols. Good luck.