.378 Weatherby Magnum

Rifle cartridge .378 Weatherby Magnum Munit01.jpg 300px .378 Weatherby Magnum, center South Gate, California Rifle Roy Weatherby 1953 Weatherby 1953-Present Belted, bottleneck .375 .399 .560 .582 .579 .063 2.913 3.65 1 in 12 in mm on Large rifle magnum 300 Full Metal Jacket 2925 5699 300 Round nose 2925 5699 270 Truncated solid 3060 5613 270 Pointed soft point 3180 6062 260 Partition Type 3140 5743 26 in (66 cm) Weatherby http://www.weatherby.com/products/ammo.asp?prd_id=11%2F Weatherby 2018-11-26 https://web.archive.org/web/20070927085809/http://www.weatherby.com/products/ammo.asp?prd_id=11%2F 2007-09-27 dead / Nosler http://www.nosler.com/index.php?p=11&b=3%2F&s=102%2F Nosler 2018-11-26 https://web.archive.org/web/20070928132552/http://www.nosler.com/index.php?p=11&b=3%2F&s=102%2F 2007-09-28 dead The .378 Weatherby Magnum was designed by Roy Weatherby in 1953.FAQ at weatherby.com.Jones Allan 2021-04-05 The .378 Weatherby Magnum https://www.shootingtimes.com/editorial/378-weatherby-magnum/390467 2024-08-27 Shooting Times en Although inspired by the .416 Rigby, it is an original belted magnum design with no parent case.Any Shot You Want, The A-Square Handloading Manual, pp. 479,480 The cartridge features a high powder capacity relative to its bore size, and can hold upwards of 7.13 g (120 gr) of powder. This consideration prompted the Federal Cartridge Company to introduce the 215 Magnum primer specifically for this round. The .378 shares the double radius shoulder design found on the other Weatherby magnum cartridges. The impetus for the development of the .378 arose from Roy Weatherby's extensive field testing conducted in African hunting grounds. Based on his safari experiences, he believed it to be desirable to improve the performance afforded by his preexisting .375 Weatherby Magnum by devising a larger cartridge more in keeping with the design philosophy of his small-bore cartridges, such as his .300 and .257 Magnums.Sierra Bullets Reloading Manual, Rifle, Second Edition, pg.287 weatherby http://www.nrainsights.net/first%20freedom/weatherby.asp https://web.archive.org/web/20070928033818/http://www.nrainsights.net/first%20freedom/weatherby.asp 2007-09-28 www.nrainsights.net To promote the .378, Roy Weatherby killed an African elephant with one shot at extended range. In order to gain access to markets across the African continent by accommodating the 10.16 mm (.40 caliber) minimum bullet size required for use on dangerous game in some countries, Weatherby soon necked the .378 to 11.63 mm (.458 caliber) and introduced the resultant cartridge as the .460 Weatherby Magnum in 1957.http://www.weatherby.com/products/ammo.asp?prd_id=13 2020-01-14 https://web.archive.org/web/20080808090925/http://www.weatherby.com/products/ammo.asp?prd_id=13 :: Weatherby : .460 Weatherby Magnum :: 2008-08-08 dead Considered a safari-grade cartridge, the .378 Weatherby Magnum is appropriate for taking all African game animals, including the African antelopes, Nile crocodile, hippopotamus, and the Big Five. Some hunters on the North American continent employ the .378 for American elk, brown bear, and polar bear. With proper bullet selection, the .378 provides a similar trajectory to and greater downrange energy than the .300 Winchester Magnum, .300 Weatherby Magnum, and .338 Lapua Magnum. The .378 Weatherby generates considerable free recoil with full-power loads, for an average of 72 ft·lbf from a 9 lb rifle. This compares to 23 ft·lbf from a rifle chambered for .30-06 Springfield or 44 ft·lbf for the .375 H&H Magnum. However, the .458 Winchester Magnum generates 78 ft·lbf and the .458 Lott produces 86 ft·lbf of free recoil.Hornady Handbook of Cartridge Reloading 2016 Hornady Manufacturing Company Tenth Grand Island, Nebraska It should also be noted that Weatherby Mark V rifles chambered in this cartridge are equipped from the factory with removable muzzle brakes that greatly reduce felt recoil. The .378 has been responsible for numerous wildcat cartridges. It has been necked-down as the .22 Eargesplitten Loudenboomer and necked-up as the .475 A&M and .500 A-Square, and shortened to produce the .30-378 Arch (7.62mm), .338-378 KT, and .460 Short A-Square (11.63mm).Ackley P. O. Loading Data - Rifle Ackley P. O. Handbook for Shooters and Reloaders 1962 Publishers Press Salt Lake City, Utah 5158681 https://archive.org/details/bwb_S0-EFM-965/ registration 442Any Shot You Want, The A-Square Handloading Manual, pg 604Ackley P. O. Loading Data Ackley P. O. Handbook for Shooters and Reloaders II 1993 1966 Plaza Publishing Salt Lake City, Utah 220827505 https://archive.org/details/handbookforshoot0000poac registration 141Any Shot You Want, The A-Square Handloading Manual, pg 561 Some .378-based derivatives have gone on to be part of the Weatherby line: namely, the .30-378, .338-378, .416 and .460.http://www.weatherby.com/products/ammunition.asp/ Weatherby Ammunition 2007-04-01 https://web.archive.org/web/20070410164034/http://www.weatherby.com/products/ammunition.asp 2007-04-10 dead See also List of rifle cartridges 9 mm caliber other cartridges in the same caliber range. .22 Eargesplitten Loudenboomer .30-378 Weatherby Magnum .338-378 Weatherby Magnum Footnotes Category:Pistol and rifle cartridges Category:Magnum rifle cartridges Category:Weatherby Magnum rifle cartridges