
| Type | Ball |
|---|---|
| Projectile | FMJ, steel and plastic |
| Case | plastic, clear |
| Primer | percussion, flat, nickel |
| Headstamp | [none] |
| Notes | This round was intended for a 25,500 round-per-minute, 8-barrel gatling gun. The screw projectile was used as an inexpensive means of test firing; combat projectiles would have been flechettes. The head appears black due to scanning artifacts - it is actually clear plastic. |