The .458 HAM'R (11.6x39mmRB) is a large bore, centerfire
rifle cartridge
A rifle cartridge is a firearm cartridge (firearms), cartridge primarily designed and intended for use in a rifle/carbine, or machine gun.
Types Full-powered
A full-powered cartridge is a rifle cartridge used interchangeably between servic ...
, designed for use in
AR-15 style rifles. Wilson Combat, owned by Bill Wilson (developer of .458 HAM'R), sells a .458 HAM'R chambered, AR-style firearm named the WC-12, which is between the sizes of the AR-10 and AR-15 platforms. AR-10 platforms with lowers that accept an AR-15 cartridge can also safely fire the .458 HAM'R.
It is very similar to the
.458 SOCOM, specialized to operate at higher pressure, offering an increased range in a flatter trajectory. The cartridge uses an AR-15 sized magazine, but the cartridge pressures require a bolt, barrel, and receiver designed for the pressure of the AR-10 platform.
Designer
Bill Wilson of
Wilson Combat
Wilson Combat is a custom pistol manufacturer located in Berryville, Arkansas, that specializes in customizing and manufacturing M1911A1s. First started under the name "Wilson's Gun Shop" in 1977, Bill Wilson started his new gunsmith business in ...
designed the cartridge. The .458 HAM'R has a single sister cartridge under the HAM'R name, the
.300 HAM'R, also designed by Wilson Combat.
See also
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List of rifle cartridges
List of rifle cartridges, by primer type, Caliber, calibre and name.
File:Cartridge Sample 2.jpg, 350px, From left to right: 1 .17 Hornady Mach 2, 2 .17 Hornady Magnum Rimfire, 3 .22 Long Rifle, 4 .22 Winchester Magnum Rimfire, 5 .17/23 SMc, 6 5mm ...
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List of AR platform cartridges
The AR platform has become widely popular for makers of hunting and sporting rifles. Although the designations "ArmaLite AR-10, AR-10" and "Colt AR-15, AR-15" are respectively trademarks of ArmaLite and Colt's Manufacturing Company, Colt, variant ...
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.458 SOCOM
References
Rebated rim cartridges
Paramilitary cartridges
Pistol and rifle cartridges
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