Well there is a little know fact about the CZECH ammo vs the Russian ammo in this caliber. The Czechs loaded there ammo at higher pressures due to there not wanting to use Russian weapons after they were invaded by the Russians and forced into the empire . So the Czech republic, were told that they had to use Russian weapons or make there own that used Russian calibers. So they made there own weapons and ammo. As a way to thumb there noses at the Russians for this, They made there weapons to handle higher pressures and loaded there ammo that way. So if you use Czech made 7.62 Tok in a Russian made TT-33 Tokarev pistol it will blow up .
That is not so. There is an awful lot of surplus Czech 7.62x25 being shot through TT-33's and Norinco Type 54's these days with no such incidents. IIRC a few years back, there was some furor over surplus Czech 7.62x25 blowing up guns, including the CZ-52, and it was suggested that this was supposedly SMG rounds. I don't know if there was any satisfactory conclusion reached, but I do know from personal experience that Czech 7.62x25 pistol rounds can safely be shot in Type 54 pistols, and by extension, TT-33's.
It is a neat, hot little round, with a bit more bark than a 9mm, but no discernible extra recoil. It's reputation for penetration comes from it's being a light, small bore, high velocity round that is typically loaded as a steel jacketed or cored pill by com-bloc arsenals.