.50 BMG United States
Details
| Type | AP, M2 |
|---|---|
| Projectile | FMJ, GM, black tip, 1 smooth cannelure |
| Case | brass, taper crimp |
| Primer | percussion, flat, brass, 3-triangle crimp, purple annulus |
| Headstamp | R A 42 |
| Notes | Projectile is seated out a few millimeters too far, exposing the crimping cannelure. |