Lots of Time-In-Grade with the 30 Mauser/7.62 x 25 Tokarev; I own a C-96, a ChiCom Type 54 like the O/P. and a CZ-52.
Specific to the Tokarev--the milsurp ammo from China that I pulled down c. 1990 all had .307" FMJ bullets. Throat is a few tenths under .311", barrel is a few tenths over .310". A .311" bullet seated into the case neck won't fit into the chamber, it hangs up on the too-small chamber neck. My solution was to resize the brass without the expander ball/rod in place, then ream the case necks with the Forster 30 Caliber neck reamer. This was a requirement with both my initial brass (reformed W-W 9mm Win Mag brass) and for my later-purchased Starline 7.62 Tokarev brass in this pistol. The C-96 and the CZ-52 have other less obnoxious quirks that prompt me to load ammo for all 3 pistols with slight differences. Kind of a PITA, but worth it.
The Mauser case and the Tokarev case are NOT identical; Mauser is .990" long, while the Tok is .970" long. The critical diameters of the Tok case are all a few thousandths smaller, and the case shoulder a few thousandths shorter as well. The upshot of this is that 30 Mauser size dies won't quite resize Tokarev brass enough to run in Tokarev or CZ-52 pistols--not mine, at least.
Cases will stretch upon every firing, and more so as pressures increase. With the Mauser brass, trimming is needed every second firing (#313249 @ 1225 FPS). In the Tokarev brass with that bullet at 1400 FPS, you'll trim after every firing.
There isn't much case neck to hold bullets securely with these cartridges. You'll need a slight roll crimp into a cannelure with jacketed bullets, or it WILL TELESCOPE BULLETS upon feedramp contact during cycling. Depending upon cast bullet design, a slight roll crimp or a taper crimp INTO A DRIVE BAND will snug things up properly. Trying to roll crimp these dinky necks into a cast bullet crimp groove is a frustrating enterprise IME; too much roll crimp causes the tiny neck to "spring away" from the bullet sidewall. I use the 30 Mauser size die minus the decapping rod/expander ball to just "kiss" the end of the case mouth into the bullet drive band. Yes, It can be fiddly.
The brass used the Winchester White Box loaders in 7.62 x 25 is excellent for reloading, as is Fiocchi. Starline is also quite good.