It's now been posted twice, but since there's a drop more information here, I'll post what my friend sent me:
Yes it’s swedish and it says:
36 pcs
9 mm machingun cartridges model 1939
May only to be used in (now I’m not sure what is in english but it says) trainingbarrel WHITHOUT training apparatus.
The numbers at the bottom says they are manufactured by NORMA the ”070” indicates that rest is just lot #.
These shots was made with a ”plastic” bullet actually not really plastic, it was that kind telephones was made from in the therties if you get what I mean.
There was also a small steelball in the tip , it was meant to be used at very short range just for training purposes.
Why is it 36pcs in the box , yes thats right the mags for our Carl Gustav m/45 hold 36 shoots.
I can also add that we actually compete in our national shooting program with the m/45B as it i called, one can be Swedish champion in submachin gunning.
Yes all is well over and a Happy new year to all of you guys over ther.
Wish I could make trip to you a visit some of your shooting and bring my rifle.