Cartridge comparison
.300 Whisper vs .308x1.5-inch Barnes
.300 Whisper and .308x1.5-inch Barnes are both in the reference; see the full spec comparison below.
Side by side
| .300 Whisper | .308x1.5-inch Barnes | |
|---|---|---|
| Type | Wildcat | Wildcat |
| Introduced | 1992 | 1961 |
| Bullet diameter | 0.3084″ | 0.308″ |
| Case length | 1.3709″ | 1.5″ |
| Max pressure | 25,000 psi | — |
| Recoil | 4–7 ft·lb | — |
| Effective range | 250 yd | 150 yd |
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.