i read on other forums good and not so good things about the 22n. biggest complaint was extractions. feeding was fine. i wouldn't mind having the 22 and/or 24 nosler in the 15 platform. i keep talking myself out of any rebated rim in the ar platform. i was going to go 284win, but went with 7-08rem instead in the ar. not sure if nosler was discontinuing the 24 brass as i haven't seen any offerings from other brands? what drives my chambering decisions in ar's is if i can find all reloading associated components in that cartridge.