I have shot a bunch of 69’s with AR Comp and the shoot well. My only thought is load 4 rounds up at 22.6, 22.9, 23.2, 23.5, 23.8 (after 23.5 monitor your primers for pressure). That way you are not wasting 20 rounds if your rifle does not like 23.2 or 23.5? 4 round groups will not tell you if a group is AWESOME, but it will 100% tell you if a group is BAD. A 2”-3” group at 100 yards is NOT going to get any better so no need to waste ammo. Then when you fin a 4 shot group that looks great, load up 5-7 to confirm.