.223 AR-15 reloading

[billmo]

Chris, did you ever try any 500 and 600 yd shots with your .223?

 

[billmo]

Finally got around to shooting this rig today. My first 5 shot group was a .574 @ 100 yds. and I know I can do better because of hold technique. I think I'm going to like this thing.
This was new unfired IMG brass with flash holes deburred. Did not cut primer pockets. Loaded Sierra's accuracy load of 25.3 gr. of Varget under a 69 gr. HPBT Match bullet. CCI BR 4 primer. Set the OAL. at 1.909 which put it .010 from the lands. I think it would stand a little more flight fuel. ROCK RIVER ARMS says .750 at 100 yds. is their warranty. I had my doubts about an auto performing that well, but the caliper don't lie. ROCK RIVER ARMS ROCK is all I can say.