I don�t know what twist your barrel is but it will make a difference in accuracy for bullet weight. Based on your rifle twist it is best to test several bullets for your twist to see which your rifle likes best. Scope power makes a difference also but 16x should be enough power for accurate work. I have a Colt 24 inch heavy barrel target 223 and it will shoot about half inch 5 shot groups off the bench if I do my part with good hand loads. I do not shoot 10 round groups. I load thousands of rounds by hand on a single press no progressive. I trim and clean all my brass. I use Nolser bullets and Varget and H335 powers. My Colt barrel is a 1 in 9 twist so it shoots 55 gr bullets about as well as any. I can buy lots of 500 ct bullets in 55 gr when not in short supply so it is my preferred bullet. I stocked up before this last run because I shoot lots of rounds every year.
