.55 Boys United Kingdom
Details
| Type | AP, WI |
|---|---|
| Projectile | FMJ, CNCS |
| Case | brass, 1 tapered, 3 stab crimp |
| Primer | percussion, flat, brass, ring crimp, green annulus |
| Headstamp | K.39 W.I |
| Notes | Most of the primer annulus color has worn away. |
| Type | AP, WI |
|---|---|
| Projectile | FMJ, CNCS |
| Case | brass, 1 tapered, 3 stab crimp |
| Primer | percussion, flat, brass, ring crimp, green annulus |
| Headstamp | K.39 W.I |
| Notes | Most of the primer annulus color has worn away. |