Ed, thanks for freshening my mind on the .223AI - not something I followed at the time.
In my old .223 I've not gone past 60g bullets and only loaded those twice. It was a 60g Hornady with 25g of 4895 and that got close to 3,000 fps. It worked pretty good - of course, better in wind than the 50s and 55s, Have not yet loaded any TAC, but have used the Berger 62g in a 22/250 and it was good stuff.
