The .224 Valkyrie (5.6×41 mm), cartridge is a .22 caliber (5.6 mm) rimless bottlenecked intermediate rifle cartridge, developed by Federal Premium Ammunition. .224 Valkyrie was designed to match or exceed the performance of the .22 Nosler, while still being compatible with modern sporting rifles.
The long-range shortcomings of the .223 Rem./5.56 NATO cartridge have long left AR rifle fans wishing for something better in .22 caliber centerfire. Nosler took a swing at a solution in 2017 with its .22 Nosler, which improved upon .223 Rem. performance by sending bullets of similar weight, initially topping out at 77 grains, downrange faster. In 2018, Federal unveiled its own offering, the .224 Valkyrie, which was essentially built around a long, sleek, high-B.C. 90-grain bullet zipping along at 2,700 fps, and typically fired from rifle barrels with a fast 1:7 twist rate to better stabilize such bullets. That particular load, with a HPBT MatchKing bullet, remains supersonic to about 1,300 yards.