460 Weatherby Magnum cartridge schematic: All dimensions in inches.
SAAMI recommended chamber dimensional tolerance range does allow for the headspacing to take place on the shoulder if need be.Ĭartridge dimensions and specifications SAAMI compliant. The close chamber tolerance of Weatherby rifles indicate that these rifles do indeed headspace on the belt rather than the shoulder, unlike most modern belted cartridges which headspace on the shoulder regardless of the belt the few exceptions being the. 460 Weatherby Magnum is designed to headspace on its belt. 458 Winchester Magnum rarely weighs over 80 gr (5.2 g). 460 Weatherby Magnum can weigh well in excess of 120 gr (7.8 g) in comparison a powder charge for the. To accomplish this design goal, the cartridge case has a capacity able to hold 141.1 gr. 460 Weatherby Magnum requires a case with the large propellant capacity necessary to propel a 500 gr (32 g) bullet at 2,700 ft/s (820 m/s). 416 Rigby case, it is considered a unique case which has gone on to serve as the parent cartridge of several high performance cartridges. 378 Weatherby Magnum case was inspired by the. 460 Weatherby Magnum case uses a necked up. The Commission Internationale Permanente pour l'Epreuve des Armes à Feu Portatives (CIP) has also provided specifications for the cartridge to which all member states must comply when exporting, importing or manufacturing ammunition. 460 Weatherby Magnum is no longer considered a proprietary cartridge as the Sporting Arms and Ammunition Manufacturers' Institute (SAAMI) established voluntary specifications for the cartridge in January 1994. Norma would later purchase the company and rename the powder Norma 204. But some time later Norma was able to source a powder with similar burn characteristics locally which was used instead of DuPont's IMR 4350. 4350 powder to Norma Projektilfabrik for the reloading of Weatherby ammunition. 300 Weatherby ammunition before production once again moved to Norma. 460 Weatherby Magnum cartridge and in the end only produced substandard. However, RWS did not tool up in time to produce the. Sauer/Dynamit-Nobel, production at Norma ceased and shifted to RWS, a wholly owned subsidiary of Dynamit-Nobel. 460 Weatherby Magnum cases and ammunition which carried the Weatherby name and has done so under contract from Weatherby. Norma Precision of Sweden was the first and only manufacturer of. He had success with the cartridge in Africa shooting Cape buffalo and rogue elephants in 1956, a year before Weatherby began work on his own. Buhmiller named his cartridge the ".45 Weatherby". That distinction belongs to John Buhmiller, a gunsmith and hunter from Montana. However, Weatherby was not the first cartridge designer to neck up the. 460 Weatherby Magnum were built on Brevex Magnum Mauser action. He named the new cartridge the ".460 Weatherby Magnum".
In response to these factors, Weatherby believed that it was necessary to provide hunters a Weatherby cartridge that could be used to hunt African dangerous game in the countries which had legislated against hunting with sub-.40 caliber rifles. These regulations would essentially ban the use of all previous Weatherby cartridges for the hunting of elephant, African Cape buffalo and rhinoceros. Furthermore, new regulations prohibiting the hunting of heavy, thick skinned, dangerous game with sub-.40 caliber (10.16 mm) cartridges were being enacted in some African countries.
378 Weatherby Magnum to make some headway in the African continent but believed that his cartridge was being bypassed for low-velocity, big-bore cartridges by professional hunters who he felt were resistant to change. 2.3 Chamber dimensions and specifications.2.2 Cartridge dimensions and specifications.460 launches a 500-grain (32 g) bullet at a chronographed velocity of 2,700 ft/s (820 m/s) from a 26-inch (660 mm) barrel, measuring 8,100 ft⋅lbf (11,000 J) of muzzle energy. 460 Weatherby Magnum eclipsed this, and was the world's most powerful commercially available sporting cartridge for 29 years until the advent of the. 600 Nitro Express had been the most powerful cartridge but the. 460 Weatherby Magnum was designed as an African dangerous game rifle cartridge for the hunting of heavy, thick skinned dangerous game. 378 Weatherby Magnum parent case was inspired by the. 378 Weatherby Magnum necked up to accept the. 460 Weatherby Magnum is a belted, bottlenecked rifle cartridge, developed by Roy Weatherby in 1957.