30x173 cartridge id please

[spotter]

Can someone provide an id on what this 30x173 may be from

Thanks
Allan

 

[spotter]

anyone ???

 

[roller63]

A quick search for the head stamp "NP" brings up a Swedish manufacturer. Norma Projektilfabrik - Amotfors, Sweden. Not my field, so I could be way out.

 

[Big Dave]

Mk44 Bush master 2gun used in a AFV used by the Singapore defence force ? Just a guess

 

[spotter]

Thank you Roller and Dave