Not sure what the signs are of that particular ammo being "too hot for the Tok," but IIRC there was a member (Clark) who tested a CZ-52 and a Tok to failure and the TT-33 actually handled significantly higher pressure loads than the CZ-52. I can't recall with 100% certainty, but I think that he ran out of case capacity before he could make the Tok actually fail. While the roller-locking action is undoubtedly stronger than most pistol actions, the weakest place in the CZ-52 wasn't the lock-up, but rather the barrel at the chamber, which is considerably thinner on the CZ-52 than on the TT-33.
Hope this helps,
Saands
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