Originally Posted by Justhunt999
I see that alot of you say you have a 223AI what does this mean?



999,

It's a process of increasing the shoulder angle on a round, taking out most of the case taper and fire forming the parent round in the new AI reamed chamber.

This was done to get a boost in performance over the parent case, i.e. the 223AI over the .223. Also, the Ackley case shape minimized case stretch and reduced trimming.

This rather ancient method of enhancing the .223 was before the development of the .22-204, where one could simply open the neck of a .204 case to .224 with one simple step, load and shoot with about the same performance.

To answer your above captioned question, it means there are those who, to this day, cling to the labor intensive process of "fire forming" brass to make their AI cases.

And, it also took quite a while for smokeless powder to catch on, many old timers convinced it was just a passing fad... laugh

DF

Last edited by Dirtfarmer; 04/11/12.