Same holds true for any caliber,,,,,if you handload.... .
That's questionable~ components are not available in many countries, nor would be a press and dies. And getting some of these things into a country could prove fatal.
Friend of mine has lived in Mexico for many years, handguns are available, but ammunition is almost nonexistent. Another friend lives in Portugal, getting a handgun there is most difficult, and ammunition is limited. No components are available to him.
The point being that 9mm ammunition can be obtained, legally or illegally from para-military sources.