Cartridge comparison
.32 ACP vs .320 Revolver Long
.32 ACP and .320 Revolver Long are both in the reference; see the full spec comparison below.
Side by side
| .32 ACP | .320 Revolver Long | |
|---|---|---|
| Type | Pistol | Revolver |
| Introduced | 1899 | 1868 |
| Bullet diameter | 0.3125″ | 0.3031″ |
| Case length | 0.6799″ | 0.8071″ |
| Max pressure | 20,500 psi | 14,504 psi |
| Recoil | 1.3–1.5 ft·lb | 1 ft·lb |
| Effective range | 25 yd | 50 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.
