There is one other option for C96 owners that should only be used on shooter grade only pistols.
Wolf Springs makes a kit of stronger springs just for this purpose and from my experience it works well.
Several years ago I purchased a shooter grade C96 from a fellow here on CGN. The recoil springs were broken. I contacted the fellow because I was POed he didn't include that info in his ad. After talking to him, it was pretty obvious what had happened. He shot Czech ammo through the old girl. He told me around 50 rounds but it wasn't cycling properly so he decided to get rid of it. It was pretty obvious that he hadn't stripped the pistol down to clean it but he did spray some Windex down the bore and scrubbed it, just like he did his SKS. Fine, the issues weren't intentionally left out.
Anyway to make a long story short, I called the good people at Wolf Springs and the nice lady I spoke with suggested that I purchase their kit for the C96 with intentionally stronger springs. The only thing was is I had to trim them for length. The kit even includes the folded leaf, magazine spring. That pistol handled everything it was fed after the swap out, but I will admit, I only shot a few rounds of the Czech fodder through it.
I remember there was another thread about this a while back. I remember someone posted a WWII posting by the Germans, stating that all RUSSIAN 7.62x25 ammunition was suitable for C96 pistols, which the Soviets used in quantity, along with the other firearms using the same ammo, completely interchangeably.
From the posted tables in this thread, the only ammo that would be deemed unacceptable for use in a C96 in good condition, would the the Czech manufactured stuff.
I don't know why the Czechs made such significantly hotter ammo, but they didn't accept the SKS either, or it's ammo until they were basically forced into compliance and had to convert most of their 52/57 rifles to Com Bloc standard.
