So, have these changes in design approach and philosophy really brought shooters better-performing, more-shootable cartridges? Another look at cartridge specs below provides the answer. The .224 Valkyrie does not match the .22/250 with the heaviest projectiles that the .22/250 can shoot, but the Valkyrie burns about 8 to 10 grains less powder in the process. The .224 Valkyrie can fire the heaviest projectiles made in .224-inch caliber. Not so the .22/250 without a rebarrel and a faster twist. For long-range shooting, the .22/250 can’t touch the Valkyrie. Likewise, the 6mm Creedmoor can run away and hide from a .243 Winchester. The .300 WSM produces the same performance as the .300 Win. Mag. but does it with 6 to 8 grains less propellant. In every one of the comparisons, the newer cartridge will have longer barrel life, less recoil, and less muzzle blast because of its more efficient design. Lastly, at this point there is little argument about the outstanding accuracy of any of these new cartridges. Shooters have never had it so good.