20 x 110mm USN United States
Details
| Type | Dummy, MK 100 |
|---|---|
| Projectile | steel, aluminum windscreen, gold, 1 copper driving band Projectile Markings: (black ink) 20MM DUMMY INERT FOR GUN MK12 (stamped on fuse) 1211649-A-1 Driving Band Markings: *20-MM MK.11-0 A LOT L 1-21* |
| Case | steel, choke crimp, cadmium plated, 6 holes Markings: (black ink) RNO 1-307 |
| Primer | none |
| Headstamp | 20MM-MK5. MOD.0 RNO . 10 . 65 |