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The .375 Weatherby Magnum was designed by Roy Weatherby in South Gate, California, in 1944 and put into production in 1945. The original cases were fire formed from .300 H&H Magnum Winchester brass, then from Richard Speer's 300 Weatherby brass [3] before finally settling with Norma as a source for cases.
The .375 Weatherby Magnum is an improved case like the .375 H&H Ackley Improved. The case was designed by Roy Weatherby in 1944 and features the Weatherby double radius shoulder typical of all Weatherby cartridges. The .375 Weatherby Magnum is capable of launching a 300 gr (19 g) at 2,800 ft/s (850 m/s).
The .257 Weatherby Magnum is a .257 caliber (6.53 mm) belted bottlenecked cartridge. It is one of the original standard length magnums developed by shortening the .375 H&H Magnum case to approx. 2.5 in (64 mm).
.375 Flanged Nitro Express.375 H&H Magnum.375 Remington Ultra Magnum.375 Ruger.375 SOCOM.375 SWISS P.375 Viersco Magnum.375 Weatherby Magnum.375 Whelen.375 Winchester.376 Steyr.378 Weatherby Magnum.38 Special.38-40 Winchester.38-55 Winchester.38-56 WCF.38-70 Winchester.38-72 Winchester.380 Long
.300 Weatherby Magnum.300 Remington Ultra Magnum.30-378 Weatherby Magnum.325 Winchester Short Magnum.338 Ruger Compact Magnum.338 Winchester Magnum.338 Remington Ultra Magnum.338 Norma Magnum.338 Lapua Magnum.340 Weatherby Magnum.338-378 Weatherby Magnum.358 Norma Magnum.375 Holland & Holland Magnum.375 Weatherby Magnum.375 Remington Ultra Magnum
The .30-378 Weatherby Magnum is a .30 caliber, belted, bottle-necked rifle cartridge. [2] The cartridge was developed in response to a US Army military contract in 1959. 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 shootin
The .460 Weatherby Magnum, like the .375 H&H Magnum, is a relatively flat shooting cartridge. The maximum point blank range (MPBR) for the 450-grain (29 g) Weatherby load is 258-yard (236 m). The 500-grain (32 g) Weatherby factory ammunition has a maximum point blank range of 245-yard (224 m).
The .378 Weatherby Magnum was designed by Roy Weatherby in 1953. [3] [4] Although inspired by the .416 Rigby, it is an original belted magnum design with no parent case. [5]The cartridge features a high powder capacity relative to its bore size, and can hold upwards of 7.13 g (120 gr) of powder.