The info about reloading your own is absolutely correct. Ammo specifically developed and tested for your pistol. Usually what shoots good in one CZ shoots good in another.
Even when CZ discontinues a pistol a lot of the internal parts, maybe most of them, are still made/available because the also fit other CZ pistols. Pins, triggers, hammers, extractors, safeties, etc. The slide and frame may be different but the majority of the wear and tear parts are still being made for the new models.