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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, M51A1
Projectile
steel, 1 steel driving band
Projectile Markings:
(black ink) LC-55-16 (stamped) 20MM DUMMY M51A1
Case
steel, choke crimp, cadmium plated
Primer
percussion, flat, steel, 3-triangle crimp
Headstamp
[none]