Is 200 ft per second worth the extra cost to you. Alot more trouble for 223 AI. The barrel will have to be custom or rechammer job around $50 t0 $75. A custom barrel about an extra $100. If you want the extra speed for a .224 calbra why not a 22-250 or 220 swift (223 rechammber). No costly dies or case formming. The down side is the brass would be more costly; but not by much. If I may add; Yes, the 223 is the most popular caliber. The main reason for this is that a box of 223 ammo can be had for $4 dollars per box and a person can go out and shoot the cheaper ammo in the barrel. Other calibers are more accurate others have greater velocity. That is my 2 cents, Twyman
