Q: Why does the title say 9x18 "Makarov" but then you say "will not fit Makarov pistols"?
A: 9x18 Makarov is a caliber. There are numerous "Makarov" style pistols designed after the Russian Makarov pistol from the 1950s. Russia, E Germany, Poland etc. all made a "Makarov" pistol in 9x18 Makarov, for which the caliber was named.
Q: What calibers is the CZ-82 or CZ-83 chambered in?
A: The CZ-82/CZ-83 (Czech) comes chambered in either 9x18 Makarov or .380 ACP.