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A military small & medium caliber ammunition collection
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Cartridge Details
20 x 102mm
United States
Details
Type
Dummy, M51A1B1
Projectile
steel, zinc chromate, 1 steel driving band
Projectile Markings:
(stamped) 20 MM DUMMY M51A1B1 (black ink) LC-61-1
Case
steel, choke crimp, cadmium plated
Primer
blind, brass
Headstamp
[none]