I have two Tokarev TT33 1945 (with 6 magazines), from the Izhevsk arsenal, the first one did shoot many rounds before me, however, the second one did not shoot many rounds, almost nothing compare to the other one, there was no scratch inside the rail of the slide....now it has some...
you will found that those Tok are kind of ''apart'' gun from other guns, you will probably (like me and others fans of Tok) falls in love the way it shoots, the sound and the recoil brings fun to the shooting, amazing gun.
Take it apart before any shooting, you can also remove the trigger easily (pull it back inside the frame), go yutube if you don't have experience with it, good videos...put all the piece into oil and remove all the grease....(maybe you don't need those advise...anyway..)
when the gun is hot, it have the tendancy to jam here and there, don't be afraid, it's the way of the tokarev (my first one is like that, once hot..it jams...but my other one is ok), and for dekoking the hammer, you have no choice to pull the trigger empty (I know, never do that with a gun....well, with the Tok...no choice, you won't damage the firing pin, solid metal) if you decok the hammer by hands, it won't do nothing else after that and you will have to crank the hammer and than pull the trigger to shoot it....
Q.: what year do you have ? real Tokarev TT33 were made up to early 1946, after that it might be a M57 , or a chinese clone (which you don't want)...
it might be from either Izhevsk or Tula aresnal,
do you have the refurbish mark ? a small square with a diagonal line inside, something it's only two line with a diagonal line between....