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[a] The result was the introduction of medium-bore big-game cartridges .375 H&H Magnum, .416 Rigby, .404 Jeffery, and .425 Westley Richards. [4] The performance of these cartridges on game matched the performance of the big-bore Nitro Express cartridges.
The .375 H&H Magnum, also known as .375 Holland & Holland Magnum, is a medium-bore rifle cartridge introduced in 1912 by London based gunmaker Holland & Holland. [2] The .375 H&H cartridge featured a belt to ensure the correct headspace, which otherwise might be unreliable, given the narrow shoulder of the cartridge case. [3]
By way of comparison, the .416 Rigby and .416 Remington Magnum cartridges fire .416 in (10.57 mm) bullets of 400 gr (26 g) at 2,400 feet per second (730 m/s) with a muzzle energy of approximately 5,000 foot-pounds force (6,800 N⋅m). These cartridges exceed the ballistic performance of the .404 Jeffery but at the price of greater recoil and ...
The intent and purpose behind the .416 Remington Magnum cartridge was to provide a dangerous game rifle cartridge which could emulate the performance of the vaunted .416 Rigby cartridge. While the .375 H&H Magnum is considered marginal on heavy, dangerous game, the .416 Rigby was recognized as a big bore with definitive stopping power to put ...
In 1899 Rigby approached the engineers at Mauser to make a special Gewehr 98 bolt action to handle their .400/350 Nitro Express. The introduction of this rifle in 1900 was the birth of the magnum length bolt action, paving the way for such cartridges as the .375 H&H and .416 Rigby [3]
.350 Rigby.351 Winchester Self-Loading.356 Winchester.357 Magnum.358 Norma Magnum.358 Winchester.360 Buckhammer.360 No 2 Nitro Express.360 No 5 Rook.369 Nitro Express.375 CheyTac.375 Dakota.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
The rifle is available in 5 different calibers from the .375 H&H Magnum to the powerful .450 Rigby. Rather similar in appearance to the Karabiner 98k (even if more massive and with an exposed barrel), they use a Mauser-type bolt akin to the one of the aforesaid rifle, even though the bolt is much more solid in order to better handle the huge recoil
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.