
| Type | Ball, M2 |
|---|---|
| Projectile | FMJ, GM, stannic, 1 knurled crimping cannelure |
| Case | brass, taper crimp |
| Primer | percussion, rounded, brass, ring crimp, black annulus |
| Headstamp | F A 41 |
| Notes | Frankford Arsenal supposedly stopped identifying M2 ball cartridges by using a stannic stained jacket in 1940. It is unclear why this 1941-dated round still used that ID method. |