cartrology.com

A military small & medium caliber ammunition collection

  1. Home
  2. Browse the Collection
  3. Cartridge Details

20 x 110mm USN United States

20 x 110mm USN TP United States NECO 20MM MK.5. MOD.0 4-54 profile view.20 x 110mm USN TP United States NECO 20MM MK.5. MOD.0 4-54 head view.

Details

TypeTP
Projectilesteel, green, 1 copper driving band Projectile Markings: (black ink) 20 MM (TP) ZS-178 ?PC-54 FOR GUN MK 12 Driving Band Markings: 20 MM-MK . 11-0 LOT-E5
Casesteel, choke crimp, cadmium plated
Primerelectric, flat, brass, 3-stake crimp, black annulus
HeadstampNECO 20MM MK.5. MOD.0 4-54
NotesSmall dimple on primer - possible misfire.