
| Type | Ball (Overhead Fire), XM178 |
|---|---|
| Projectile | FMJ, GM, 1 smooth crimping cannelure |
| Case | brass, taper crimp |
| Primer | percussion, flat, brass, ring crimp, red annulus |
| Headstamp | ⊕ FA 62 |
| Notes | This is an experimental overhead fire ball cartridge with a projectile made from turned brass. |