.60 United States
Details
| Type | Dummy |
|---|---|
| Projectile | FMJ, GM, 1 knurled crimping 2 knurled cannelures |
| Case | brass, 1 tapered, 1 knurled choke crimp, 3 holes |
| Primer | none |
| Headstamp | F A 45 |
| Notes | There is a crack extending from the case shoulder to the mouth. Projectile appears to be a hollow GM jacket. |