Unknown cartridge

[Michal-01]

Please help me to identify of this cartridge.

[x]

Nichal, please always write the headstamp so it is impossible to missread it.

[Michal-01]

Headstamp: 10
Second, the same cartridge has not headstamp but it on primer has: “D. A.” or “D A”

[PzGr40]

D.A is normally Dominion Arsenal, Canada. Maybe a artillery starter cartridge?
regards DJH

[genkideskan]

One guy in the IAA forum mentioned :

Looks like one of the SPIW flechette ctgs made by Dominion Arsenal.

[x]

And here the answer:

http://cartridgecollectors.org/forum/viewtopic.php?t=4860&sid=f5410bb85d3003dadf547d55f3969503

[Michal-01]

Thank you very much for help.
Michal