un-dentified 9mm ammo

[Luke]

Hello Wolf,

I have some of this (VPT 42, VPT43, VPT44)Finnish ammunition also. I wrote to the manufacturer, Lapua, in Finland and received the following:

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"Luke,

This is old surplus ammunition sold by Finnish Army to Interarms who is
apparently stamped english markings on box. It is difficult to say what
kind of ammunition this is according information you gave. However, it is
highly possible that is SMG ammunition as it was manufactured in large
quantities during WWII. The 9x19 mm ammunition intentented for the Suomi
M31 SMG features a 8 g (123 grs) bullet and has muzzle velocity of c. 400
m/s (1312 fps) and is not recommended to use with Luger type pistols as
this may broke the gun. Nomination "Parabellum" does not mean that it is
intented for Parabellum or Luger pistols exclusively as 9 mm Luger
cartridge was at that time commonly known as the 9 mm Parabellum.

Best regards,

Janne Pohjoispaa
Nammo Lapua R & D"

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Presume that SMG means sub-machine gun.
In my original email I had provided Lapua with all the information I had, so I did not follow-up on this communication except to thank the writer.

Regards,
Luke