Introduced in 2017, the 22 Nosler is the latest and newest of Nosler's five proprietary cartridges. The other four (26, 28, 30, and 33 Nosler) are based on the .404 Jeffery (or Remington Ultra Mag) case shortened, while the 22 Nosler has its own unique case dimension, sized to maximize .22 centerfire performance in an AR15 action. Case length is 1.760 inches, same as the .223, but the case is fatter with the rim rebated to fit standard .223/5.56mm bolt faces, with a sharper 30-degree shoulder. Case capacity is about 31 grains against the .223's 27.4 grains. This enables the 22 Nosler to achieve a significant velocity gain over the .223/5.556mm with any bullet weight. Nosler's initial loads include 55-grain bullet at 3350 fps; 62-grain bullet at 3100; and 77-grain bullet at 2950 fps, these velocities from 18-inch barrels. Like the other Nosler cartridges the 22 Nosler is standardized by SAAMI. The 22 Nosler will not function in .223 AR magazines, but will function in 6.8mm SPC magazines
