.223 Wylde chamber

Hybrid rifle chamber design thumb|right|250px|Diagram of an AR type rifle showing the location of the chamber A .223 Wylde chamber is a wildcat rifle 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 of Fairchild Industries, Remington Arms, 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 for the United States Army, as the M193 Cartridge.Barnes Frank C. Cartridges of the World: A Complete and Illustrated Reference for Over 1500 Cartridges https://books.google.com/books?id=02CYCAAAQBAJ&pg=PA88 19 December 2014 F+W Media, Inc. Iola, Wisconsin 978-1-4402-4265-6 88 In 1972, Fabrique Nationale (FN) created a new type of service ammunition for NATO. 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.Walter John Rifles of the World https://books.google.com/books?id=Eq2Dnj4sDZIC&pg=PA124 25 March 2006 Krause Publications Iola, Wisconsin 0-89689-241-7 124 Chamber dimensions Bill Wylde of Greenup, Illinois, 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 0.2240 in mm on freebore diameter found in the civilian SAAMI.https://www.loaddevelopment.com/223-wylde/ 223 Wylde: The Ultimate Guide to Understanding This Versatile Chamber LoadDevelopment.com 21 October 2024 +Chamber reamer dimensionsAndrew Stanfield 5.56 vs .223 - What You Know May Be Wrong https://www.luckygunner.com/labs/5-56-vs-223/ LuckyGunner.com Labs 22 June 2012 Name Freebore diameter Freebore length Throat (leade) angle PTG 223 Rem 0.2240 in mm on 0.0250 in mm on 3.1° JGS 223 Wylde 0.2240 in mm on 0.0619 in mm on 1.25° JGS 5.56 Nato 0.2265 in mm on 0.0566 in mm on 1.2° Similar designs PTG 223 Rem Match is essentially the same concept. It uses a freebore diameter of 0.2240 in mm on, throat angle of 1.5° and freebore length of 0.0680 in mm on. JGS 5.56 Compass Lake uses a freebore with a 223-style length (0.250 in mm on) and diameter (0.2240 in mm on) 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 Taipan References External links Brownells Tech Tip: AR-15 5.56/.223/.223 Wylde Chamber Choices ('Guns Magazine') Category:5.56×45mm NATO Category:Bullets Category:Firearm components