.338-378 Weatherby Magnum

Cartridge September 2007 Product June 2022 .338-378 Weatherby Magnum 338-378 Weatherby Headstamp. .jpg 338-378 Weatherby United States Centerfire/Rifle Elmer Keith and Bob Thomson 1963 Weatherby 1998 .378 Weatherby Magnum Belted, bottleneck .338 .361 .560 .582 .579 .059 2.905 3.65 125 1 in 10 Magnum Rifle 63817 250 Partition type 3060 5197 225 Truncated solid 3180 5052 200 Boat-tail soft point 3350 4983 28 in (71 cm) Weatherby http://www.weatherby.com/products/ammo.asp?prd_id=9%2F Weatherby 2018-11-26 https://web.archive.org/web/20080325043955/http://www.weatherby.com/products/ammo.asp?prd_id=9%2F 2008-03-25 dead thumb 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.:https://loaddata.com/Article/LabNotes/338-378-Weatherby-Magnum/621 The KT is based on the .378 Weatherby Magnum cartridge but is shorter by 1/4" and necked down to a .338 caliber bullet.https://www.ballisticstudies.com/Knowledgebase/.338-378+Weatherby+Magnum.html .338-378 Weatherby Magnum This design was chosen for elk hunting, using the powders available at the time, such as Hodgdon H-4831.https://cartridgecollector.net/cartridge/338-378-kt/ 338-378 KT | Cartridge Collector 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. 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.https://loaddata.com/Article/LabNotes/338-378-Weatherby-Magnum/621 .338-378 Weatherby Magnum | Load Data Article See also List of rifle cartridges 8 mm caliber References Category:Pistol and rifle cartridges Category:Weatherby Magnum rifle cartridges Category:Wildcat cartridges