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A .223 Wylde chamber is a wildcat
Brownells Tech Tip: AR-15 5.56/.223/.223 WyldeChamber Choices ('Guns Magazine')
{{DEFAULTSORT:223 Wylde 5.56×45mm NATO Bullets Firearm components
A .223 Wylde chamber is a wildcat rifle
A rifle is a long gun, long-barreled firearm designed for accurate shooting and higher stopping power, with a gun barrel, barrel that has a helical or spiralling pattern of grooves (rifling) cut into the bore wall. In keeping with their focus o ...
chamber designed to accurize the 5.56×45mm NATO chamber for NRA High Power competition.
Background
In 1957, during research into the development of a military .22 caliber rifle, the .222 Remington Special was created by a joint effort ofFairchild Industries
Fairchild was an American aircraft and aerospace manufacturing company based at various times in Farmingdale, New York; Hagerstown, Maryland; and San Antonio, Texas.
History Early aircraft
The company was founded by Sherman Fairchild in 192 ...
, Remington Arms
Remington Arms Company, LLC, was an American firearms manufacturer, manufacturer of firearms and ammunition. It was formerly owned by the Remington Outdoor Company, which went bankrupt in 2020 with its lines of business sold to several purchase ...
, and U.S. Continental Army Command. Based on the .222 Remington, and with several other .222 caliber cartridges under development for civilian rifles at the same time, the .222 Remington Special was renamed .223 Remington. In 1963 it was adopted as the standard intermediate cartridge
An intermediate cartridge is a rifle/ carbine cartridge that has significantly greater power than a pistol cartridge but still has a reduced muzzle energy compared to fully powered cartridges (such as the .303 British, 7.62×54mmR, 7.65×53 ...
for the United States Army
The United States Army (USA) is the primary Land warfare, land service branch of the United States Department of Defense. It is designated as the Army of the United States in the United States Constitution.Article II, section 2, clause 1 of th ...
, as the ''M193'' Cartridge.
In 1972, Fabrique Nationale
, trading as FN Herstal and often referred to as Fabrique Nationale, or simply FN, is a leading firearms manufacturer based in Herstal, Belgium, and former vehicle manufacturer. It was the largest exporter of military small arms in Europe .
FN ...
(FN) created a new type of service ammunition for NATO
The North Atlantic Treaty Organization (NATO ; , OTAN), also called the North Atlantic Alliance, is an intergovernmental organization, intergovernmental Transnationalism, transnational military alliance of 32 Member states of NATO, member s ...
. 5.56×45mm NATO was based on the .223 Remington cartridge being used by the U.S. Army but had greater range and effectiveness. The first iteration of this ammunition was designated ''SS109'' in NATO countries, and later adopted in the U.S. as the ''M855''.
Chamber dimensions
Bill Wylde ofGreenup, Illinois
Greenup is a village in Cumberland County, Illinois, United States, along the Embarras River. The population was 1,365 at the 2020 census. It is part of the Charleston– Mattoon Micropolitan Statistical Area.
Greenup received its name fr ...
, compared the two cartridges and changed the chamber of the rifle's barrel to a specification he called the .223 Wylde chamber. The chamber is made with the freebore length and leade angle found in the military 5.56×45mm NATO cartridge and the freebore diameter found in the civilian SAAMI
The Sporting Arms and Ammunition Manufacturers' Institute (SAAMI, pronounced "Sammy") is an association of American manufacturers of firearms, ammunition, and components. SAAMI is an accredited standards developer that publishes several A ...
.
Similar designs
* PTG 223 Rem Match is essentially the same concept. It uses a freebore diameter of , throat angle of 1.5° and freebore length of . * JGS 5.56 Compass Lake uses a freebore with a 223-style length () and diameter () but with a 5.56-like angle (1.5°). * 5.56mm Noveske Match Mod 0 is intended for a similar use. Dimensions are unavailable.Use
The .223 Wylde chamber is used by rifle manufacturers who sell "National Match" configuration AR-15 rifles, barrels and upper receivers.See also
* 5 mm caliber * Southern Cross Small Arms TaipanReferences
External links
Brownells Tech Tip: AR-15 5.56/.223/.223 Wylde
{{DEFAULTSORT:223 Wylde 5.56×45mm NATO Bullets Firearm components