During WW2 the germans had two pistols in common use the Walther's P38 and the Luger.
Both fired the 9x19 round.
They also had three machine pistols the MP38 MP40 and the MP44
these and the P38 fired a hot loaded 9x19mm Parabellum round (equal to +P loads
The Luger could not fire these hot rounds safely. Thus the germans use the designation 9mm Luger to identify the ammo for Lugers.
The P38 and the MPs all could fire the hot 9x19mm Parabellum.
US commercial 9x19mm Parabellum rounds are loaded to 9x19 luger power levels Under the weakest gun rule.(load for the weakest gun and you will not be
sued for blowing up someones gun in there face)
This may cause Wathers P38s to stovepipe the empty round when they eject.
Military surplus 9x19mm Parabellum ammo especially foreign military 9x19mm Parabellum ammo may be loaded to +p levels and should not be used in
Lugers. or any other guns that are not safe at +P levels.
Do not use +P+ ammo in any gun not designed for that ammo. Even P38s
The other 9x19 ammo is a unknown so do your homework.
