.338-378 Weatherby Magnum
.338-378 Weatherby Magnum | ||||||||||||||||
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338-378 Weatherby | ||||||||||||||||
Type | Centerfire/Rifle | |||||||||||||||
Place of origin | United States | |||||||||||||||
Production history | ||||||||||||||||
Designer | Elmer Keith and Bob Thomson | |||||||||||||||
Designed | 1963 | |||||||||||||||
Manufacturer | Weatherby | |||||||||||||||
Produced | 1998 | |||||||||||||||
Specifications | ||||||||||||||||
Parent case | .378 Weatherby Magnum | |||||||||||||||
Case type | Belted, bottleneck | |||||||||||||||
Bullet diameter | .338 in (8.6 mm) | |||||||||||||||
Neck diameter | .361 in (9.2 mm) | |||||||||||||||
Shoulder diameter | .560 in (14.2 mm) | |||||||||||||||
Base diameter | .582 in (14.8 mm) | |||||||||||||||
Rim diameter | .579 in (14.7 mm) | |||||||||||||||
Rim thickness | .059 in (1.5 mm) | |||||||||||||||
Case length | 2.905 in (73.8 mm) | |||||||||||||||
Overall length | 3.65 in (93 mm) | |||||||||||||||
Case capacity | 125 gr H2O (8.1 cm3) | |||||||||||||||
Rifling twist | 1 in 10 | |||||||||||||||
Primer type | Magnum Rifle | |||||||||||||||
Maximum pressure | 63,817 psi (440.00 MPa) | |||||||||||||||
Ballistic performance | ||||||||||||||||
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Test barrel length: 28 in (71 cm) Source(s): Weatherby [1] |
The .338-378 Weatherby Magnum is based on the .338-378 KT, a wildcat cartridge created by Elmer Keith and R.W. "Bob" Thomson in 1966.[2] The KT is based on the .378 Weatherby Magnum cartridge but is shorter by 1/4" and necked down to a .338 caliber bullet.[3] This design was chosen for elk hunting, using the powders available at the time, such as Hodgdon H-4831.[4] Due to the continued popularity of the KT, Weatherby introduced the .338-378 Weatherby Magnum in 1998 to its line of commercial ammunition, using a full-length 2.908" case.[5] Although based on the .338-378 KT, the .338-378 Weatherby Magnum and the KT have different load data and chamber sizes and are not interchangeable.[6]
See also
- List of rifle cartridges
- 8 mm caliber
References
- v
- t
- e
- Centerfire Pistol (CFP)
- Silhouette Pistol
- Mark XXII
- Mark V
- Vanguard
- Vanguard Series 2
- Varmintmaster
- Threat Response Rifle
- Athena
- Orion O/U
- Orion SxS
- PA-08
- PA-459
- SA-08
- SA-459
- .220 Weatherby Rocket
- .224 Weatherby Magnum
- .228 Weatherby Magnum
- .240 Weatherby Magnum
- .257 Weatherby Magnum
- 6.5 Weatherby RPM
- 6.5-300 Weatherby Magnum
- .270 Weatherby Magnum
- 7mm Weatherby Magnum
- .300 Weatherby Magnum
- .30-378 Weatherby Magnum
- .338 Weatherby RPM
- .338-378 Weatherby Magnum
- .340 Weatherby Magnum
- .375 Weatherby Magnum
- .378 Weatherby Magnum
- .416 Weatherby Magnum
- .460 Weatherby Magnum
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