Thread: 223 with 65gn SGK's AR2219??

Your barrel just may not like that weight/length bullet. I have a newer model 7 223 with a 9 twist barrel and had hoped it would shoot a 69gr well, i tried two different bullets, it just doesnt like them, similar groups to yours. While it will put 55gr SGK's thru the same hole, and .5 moa groups at 400, sometimes less.