The 22 Nosler has a case capacity between the 22 PPC and 22BR; anyone expecting a ballistic free lunch must be a far gone Creedmore advocate....
What the Nosler case does is maximize what can be done ballistically in .224 caliber in the mag constraints of the AR-15 without massive re-engineering and tooling of the existing platform.
A 222 Magnum or 223 AI will do this as well, but they will only gain 100 fps or so at the most, all else equal, even assuming modified magazines
The 22 Nosler achieves its goal. It will also do it in bolt actions with similar constraints without having a larger or oddball bolt face and non-domestically sourced brass or excessive case forming.
