Wolf springs used to ship Mauser 96 spring kits into Canada that had beefed up springs to allow the use of surplus ammo.
Supposedly the Soviets, who inherited a bunch of them from the Czarists, felt they should be able to handle the Tok ammo.
That being said, ever C96 I've seen, where the owner has fired a bunch of Tok ammo, has had broken recoil springs and often broken parts.
As mentioned, the 9x19 shell holder is the same. Make sure you full length resize your brass.
The load mentioned is OK, I prefer 7.5 grains of 800X, which I would consider maximum, as it is a bit slower but gives slightly higher velocities, zero malfunctions and is cleaner. Just IMHO.
There are still some replacement parts available for these pistols but they need to be fitted. The pistol I had was in excellent condition, inside and out. Still, I replace the original springs with a kit from Wolf Sprins out of the US.
C96 pistols actually need a fairly hot load to function reliably and I would suggest you start a full grain lower until you find the load that functions with consistent reliability.