20mm round

[Richard709]

Another recent find locally, 20mm round



Projectile is marked above the driving band edq/2a43115g, steel case, has nut or a ball bearing inside the case.

Richard

 

[kahu1]

German 20x82 MG151/20mm.

 

[pzgr40]

The ball bearing or nut is normally placed in shellcases when the projectile has been replaced on the shellcase with a tight fit. It allows the collector to prove the shellcase contains no powder with police control of the collection.
All of my complete -but inert- cartridges have a m5 nut in the shellcase.

Regards, DJH

 

[AE501]

If it is .98" across the base it is 2 cm Mauser.