Cartridge comparison
.25 ACP vs 5.5mm Velo-Dog
.25 ACP and 5.5mm Velo-Dog are both in the reference; see the full spec comparison below.
Side by side
| .25 ACP | 5.5mm Velo-Dog | |
|---|---|---|
| Type | Pistol | Revolver |
| Introduced | 1905 | 1894 |
| Bullet diameter | 0.2512″ | 0.228″ |
| Case length | 0.6122″ | 1.1654″ |
| Max pressure | 25,000 psi | 9,863 psi |
| Recoil | 1 ft·lb | 0.3–0.36 ft·lb |
| Effective range | 25 yd | 25 yd |
| SAAMI | SAAMI standardized | Not SAAMI standardized |
| CIP | CIP standardized | CIP 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.
