20 x 102mm United States
Details
| Type | Dummy |
|---|---|
| Projectile | steel, aluminum windscreen, black, 1 copper driving band Driving Band Markings: PMC 3-4 52 20MM T-61E4 |
| Case | brass, choke crimp |
| Primer | none |
| Headstamp | [none] |
| Type | Dummy |
|---|---|
| Projectile | steel, aluminum windscreen, black, 1 copper driving band Driving Band Markings: PMC 3-4 52 20MM T-61E4 |
| Case | brass, choke crimp |
| Primer | none |
| Headstamp | [none] |