They sell 9mm barrels for the TT-33 and the CZ-52, so I was thinking, since the 7.62 is a high pressure round already, why would .38 Super or 9X23 be a problem, especially since 9X23 has such a strong case and uses small rifle primers (the weak point would be using pistol primers). And since the mags and grip is already long enough for the longer .38 Super and 9X23 cases....I wonder if the mags would work, they should without too much problem I would think.