Federal 5.56 55 gr FMJ 400ct NATO In 1954, the larger 7.62×51mm NATO rifle cartridge was selected as the first standard NT rifle cartridge. At the time of selection there had been criticism that the recoil power of the 7.62×51mm NT, when fired from a hand-held lightweight modern service rifle, did not allow a sufficient automatic rate of fire for modern combat.The British had extensive evidence through their own experimentation with intermediate cartridges since 1945 and were on the point of adopting a .280-inch (7 mm) cartridge when the selection of the 7.62×51mm NT was made. The FN company had also been involved in the development of the .280 round, including developing a version of the FN FAL in .280.The concerns about recoil and effectiveness were effectively overruled by the US within NT, and the other NT nations accepted that standardization was more important at the time than selection of the ideal cartridge mm NT, 7.62×39mm, 5.56×45mm NT, 5.45×39mm
The development of the cartridge that eventually became the .223 Remington (from which 5.56mm NT would eventually be developed) would be intrinsically linked to the development of a new lightweight combat rifle. The cartridge and rifle were developed as one unit by Fairchild Industries, Remington Arms, and several engineers working toward a goal developed by U.S. Continental Army Command (CONARC). Early development work began in 1957. A project to create a small-calibre, high-velocity (SCHV) firearm was created. Eugene Stoner of Armalite was invited to scale down the AR-10 (7.62mm) design. Winchester was also invited to participate. The parameters that were requested by CONARC:
Federal produces hundreds of types of ammunition for a wide variety of customers and uses.In 2019, Federal started selling directly to consumers through its online store. This was partially prompted by Walmart’s decision to stop selling certain calibers of ammunition. Federal also started a new service where customers can order hand-loaded ammunition customized for their needs.