Was over at the range today and a guy over there (one of our old buddies) was shooting his "beeg .22" AR-15 with nightforce scope, a 1-9 twist barrel and a suppressor. A charge of 10 gr. SR 4759 and a powder coated NOE 70 gr. 50% WW-50% linotype shot this impressive 10 shot group at 50 yards. .827" without the flyer and 1.135" with flyer.
Not bad for his first attempt with cast in the .223.