IMHO there is no reason you can't hit 60kpsi in an AR and the 5.56/223 round. And never have a worry in the world. Why they hold it back some is beyond me. But I digress.
The AI is so simple, and nets you a gain for almost nothing in cost, why not? Can give you a bit of an edge in a match and at less pressure just depending...
I have not known John to ever not have his head totally wrapped around a complete package!
Jeff
