Cartridge comparison
.22 Extra Long vs .220 Rook
.22 Extra Long and .220 Rook are both in the reference; see the full spec comparison below.
Side by side
| .22 Extra Long | .220 Rook | |
|---|---|---|
| Type | Rifle | Rifle |
| Introduced | 1880 | 1884 |
| Bullet diameter | 0.223″ | 0.224″ |
| Case length | 0.7205″ | 0.742″ |
| Max pressure | 20,305 psi | 18,000 psi |
| Recoil | 0.25–0.3 ft·lb | 0.25–0.3 ft·lb |
| Effective range | 75 yd | 75 yd |
| SAAMI | SAAMI (not in current Z299) | Not SAAMI standardized |
| CIP | CIP 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.
