Cartridge comparison
.300 Whisper vs 7.62x40mm Wilson Tactical
.300 Whisper and 7.62x40mm Wilson Tactical are both in the reference; see the full spec comparison below.
Side by side
| .300 Whisper | 7.62x40mm Wilson Tactical | |
|---|---|---|
| Type | Wildcat | Rifle |
| Introduced | 1990 | 2011 |
| Bullet diameter | 0.3084″ | 0.3079″ |
| Case length | 1.3709″ | 1.565″ |
| Max pressure | 52,000 psi | 62,000 psi |
| Recoil | 4–7 ft·lb | 3–3.7 ft·lb |
| Effective range | 250 yd | 300 yd |
| SAAMI | Wildcat | Not SAAMI standardized |
| 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.
