In my 6x6.8 with federal brass BHW 22” barrel surpressed I’m shooting 31.7 8208 58g vmax at 3450. Get about 1/2”- 3/4” groups just depends how I am on the trigger lol. I might have to try some ar comp in the future. I have shot some 75s and didn’t have success with them yet tried cfe223 with them. Think I’m just going to shoot the 58s.