Weatherby's .30-378 is the .378 Weatherby Magnum necked down to .30 caliber and can drive a 180-grain bullet in excess of 3,400 fps. 300 H&H Magnum Ammo. Using bullets from Berger Match Grade Elite or Match Hybrid OTM. 338-378 Weatherby Magnum Rifle Cartridge. Cartridge Type: Height: 2.913" Width: 0.58" Average FPS: 3011 Average Energy: 5696 Average Gr: 283 Recoil: 3.95 *Casing image above is an artist rendering and not a real photo of .378 Weatherby Magnum Ballistics cartridge. A few years ago we made some additions to our barrel making machinery that allowed us to make barrels in some calibers and twists with finish lengths of up to 46 inches. While we have went to great lengths to make sure that it's as accurate as possible this rendering should not be used to generate specs for casings. Abbreviated Name: 338-378 Wby Mag Taking my first shots with the 460 today. Log In Register. HSM Trophy Gold 30-378 Weatherby Magnum Boat Tail Hollow Poi $ 133.00. The Contestants. Find weatherby 30-378 weatherby magnum ammo for sale online, in-stock and ready-to-ship. Thanks for any help; Cobber The .338-378 shoots a little flatter than the .340 Wby. Most orders ship within 24 hours (excludes firearms). "Bob" Thomson. Barrel Lengths in the 338/378 Weatherby Magnum January 23, 2015 2:47 am. 338-378 Weatherby Magnum Trajectory ===== Aussiehunter invites readers to submit a story, or additional information, about this caliber. 338-378 Weatherby Magnum Rifle Cartridge. The .30-378 Weatherby Magnum is a .30 caliber, belted, bottle-necked rifle cartridge. 30-378 Weatherby Magnum Rifle Cartridge. Comparing the.338 Winchester to the.33 Nosler, you’ll see the.338 driving a 225-grain bullet at a muzzle velocity between 2750 fps, whereas the Nosler case will push the same … One of the first calibers we added in these extra-long barrels was the .338 and in a 10″ twist rate. The .338 Lapua Magnum is however a rimless cartridge, the .338 Remington Ultra Magnum is a rebated rim cartridge while the .338 Norma Magnum is a rimless cartridge. Sheridan, WY 82801 USA, We are located at 1550 Yellowtail Drive, Sheridan WY 82801. I would be suprised if my 7mm AM would not match or even possibly exceed what a 7mm-378 could produce with same bullet weights and same length barrels. Another Weatherby wildcat, first introduced in the 1960s. 300 Weatherby Magnum 200 300 Remington Ultra Magnum 150 300 Remington Ultra Magnum 165 168 300 Remington Ultra Magnum 180 300 Remington Ultra Magnum 200 30-378 Weatherby Magnum 150 30-378 Weatherby Magnum 165 168 30-378 Weatherby Magnum 180 30-378 Weatherby Magnum 200 303 caliber (310, 311 dia) 7.62x39mm Gold Dot 123 303 British 150 303 British 180 Located minutes from public hunting access in the Bighorn Mountains, and endless grassland prairies. Over a charge of 79.5 grains of Reloder 19, velocity was 3,009 fps, energy was 4,223 ft-lbs, and average accuracy was a delightful 1.02 inches. 30-378 Weatherby Magnum Trajectory. A true family business operated by third-generation leader Adam Weatherby headquartered in Sheridan, Wyoming. Sort By: ... .33 Nosler (5).338 Federal (5).338 Lapua Magnum (29).338 Marlin Express (1).338 Ruger Compact Magnum (1).338 RUM (7).338 Win Magnum (24).338-378 Weatherby Magnum (3).340 Weatherby Magnum (2).348 Win (1).35 Rem (7).35 Whelen (11).350 Legend (12).357 While still unreleased to the public, the cartridge went on to set world records for accuracy including the first ten 10X in 1,000 yards (910 m) benchrest shooting. Win A FDE Barrett M107A1 .50 BMG Rifle w/ EOTech Vudu Scope ($15000 Value!) This is a Beast of a Rifle. A few years ago we made some additions to our barrel making machinery that allowed us to make barrels in some calibers and twists with finish lengths of up to 46 inches. After creating the .375 Weatherby Magnum in 1944, Roy Weatherby eventually formed the opinion that his .375 was underpowered. Mag., which I have hunted with extensively, and it topped the chart in the .33 Nosler. The cartridge was developed in response to a US Army military contract in 1959. The .375 Weatherby Magnum, developed by Roy Weatherby in 1944, is an “improved” version of the .375 H&H, meaning the body taper has been removed to increase powder capacity. Weatherby’s rich heritage began in 1945 located in Southern California. Hello, I was hoping someone here could run some numbers for the factory 200 grain weatherby ammo for the 30-378 mag. Accuracy and terminal performance are the cornerstones of Hornady ® Precision Hunter ® factory loaded ammunition. lbf) from a rifle chambered for .30-06 Springfield. 338-378 Weatherby Magnum Ballistics. Extremely powerful and flat shooting. 30-378 case Winchester HSM Trophy Gold 30-378 Weatherby Mag rifle rounds the 378 case, down! 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