.375 Weatherby Magnum
| .375 Weatherby Magnum | ||||||||||||||||
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| Type | Rifle | |||||||||||||||
| Place of origin | USA | |||||||||||||||
| Production history | ||||||||||||||||
| Designer | Roy Weatherby | |||||||||||||||
| Designed | 1944 | |||||||||||||||
| Manufacturer | Weatherby | |||||||||||||||
| Produced | 1945 | |||||||||||||||
| Variants | .375 H&H Magnum, .375 Ackley Improved | |||||||||||||||
| Specifications | ||||||||||||||||
| Parent case | .375 H&H Magnum | |||||||||||||||
| Case type | Belted, bottleneck | |||||||||||||||
| Bullet diameter | .375 in (9.5 mm) | |||||||||||||||
| Land diameter | .368 in (9.3 mm) | |||||||||||||||
| Neck diameter | .402 in (10.2 mm) | |||||||||||||||
| Shoulder diameter | .492 in (12.5 mm) | |||||||||||||||
| Base diameter | .512 in (13.0 mm) | |||||||||||||||
| Rim diameter | .532 in (13.5 mm) | |||||||||||||||
| Rim thickness | .051 in (1.3 mm) | |||||||||||||||
| Case length | 2.860 in (72.6 mm) | |||||||||||||||
| Overall length | 3.600 in (91.4 mm) | |||||||||||||||
| Rifling twist | 1 in 12 | |||||||||||||||
| Primer type | Large rifle | |||||||||||||||
| Ballistic performance | ||||||||||||||||
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| Test barrel length: 20 in Source(s): Barnes & Amber | ||||||||||||||||
The .375 Weatherby Magnum (9.5×73mmB) is a medium-bore rifle cartridge. The cartridge is blown out, improved and provided with the Weatherby double radius shoulder – given the Weatherby treatment – version of the .375 H&H Magnum. Unlike other improved versions of the .375 H&H Magnum like the .375 Ackley Improved, the .375 Weatherby Magnum is not a wildcat and existed as a proprietary cartridge until the CIP published specifications for the cartridge.