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A military small & medium caliber ammunition collection

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20 x 139mm HS820 United States

20 x 139mm HS820 TP United States profile view.20 x 139mm HS820 TP United States head view.

Details

TypeTP
Projectilesteel, aluminum windscreen, blue, 1 copper driving band Projectile Markings: (black ink) LIVE
Casesteel, choke crimp, olive drab lacquered
Primerpercussion, flat, brass, ring crimp, red annulus
Headstamp[none]