THEY GOTTEN THERE WORK CUT OUT IF THEY THINK THAT 22 NOSLER WILL SURPASS THE 22BR ITS BEEN AROUND ALONG TIME FOR SOME NEW CAT TO TAKE OVERJust did some case capacity measurements. I didn't have 6.8 case on hand, but Nosler says the 22Nosler capacity is "about" 25% greater than a 223. LC 5.56 cases hold about 27gr of RL-17 to the base of the neck. Multiply by 1.25 and you get "about" 34gr. For comparison, my Lapua 22BR cases hold "about" 35gr.
So it does appear that the 22Nosler has the potential to give very impressive performance in the AR platform for which it was designed, given that 22AR ballistics are well known and the capacity of that case should be very close to the 22BR.