Cartridge comparison
.240 Flanged Nitro Express vs 6mm-284
.240 Flanged Nitro Express and 6mm-284 are both in the reference; see the full spec comparison below.
Side by side
| .240 Flanged Nitro Express | 6mm-284 | |
|---|---|---|
| Type | Rifle | Rifle |
| Introduced | 1920 | 1963 |
| Bullet diameter | 0.2449″ | 0.243″ |
| Case length | 2.5″ | 2.1701″ |
| Max pressure | 46,412 psi | 62,000 psi |
| Recoil | 10.2–10.9 ft·lb | 9.8–15.1 ft·lb |
| Effective range | 400 yd | 1000 yd |
| SAAMI | Not SAAMI standardized | Wildcat |
| 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.
