The new 224 Valkyrie is based on a 6.8 SPC case necked down to .22 caliber. It offers dramatically improved extended range trajectories over all other AR-15 cartridges with roughly half the recoil of .308-based long range cartridges offering comparable ballistics. Shooters can expect best-in-class long range ballistics, supersonic flight past 1,300 yards and extreme long-range accuracy from this cartridge. We have optimized our match-grade barrel twist for the best long-range performance with match bullets. The 224 Valkyrie uses a 6.8 SPC bolt and magazine.