Thread: Anyone played with 223AI?

If you look at the modern case designs , creedmore , PRC etc it seems they are following the P O Ackley recipe with less taper on the case and steeper shoulder angles. There is little to improve on latter designs and the 223 rem is in that camp. It is really an improved 222 rem with the shoulder blown forward , a very short neck and minimal case case taper. Older designs left significantly more room for improvement.