Cartridge comparison
13.2x99mm Hotchkiss vs .55 Boys
13.2x99mm Hotchkiss and .55 Boys are both in the reference; see the full spec comparison below.
Side by side
| 13.2x99mm Hotchkiss | .55 Boys | |
|---|---|---|
| Type | Rifle | Rifle |
| Introduced | 1925 | 1937 |
| Bullet diameter | 0.5315″ | 0.565″ |
| Case length | 3.9055″ | 3.85″ |
| Max pressure | 18,000 psi | 68,000 psi |
| Recoil | 322.1 ft·lb | 160–160.3 ft·lb |
| Effective range | 300 yd | 300 yd |
| SAAMI | Not SAAMI standardized | Military standard |
| CIP | Not standardized | Not standardized |
| Obsolete | Obsolete | — |
Highlighted cells hold the clear edge where both sides have a number. Every figure is a range maximum from the reference; typical loads run lower.
Case profiles, to scale
Drawn to the same scale, so the proportions are true. Physical size varies with your screen.
