I had a holographic sight on two .223's and started missing easy shots. Found out there was a recall on them for POI shifts. The manufacturer very admirably bought them back and I went with Firedot Leupold VX-6 in 2-12. Have seen a noticeable tightening of groups on paper, one ragged hole now! That's good enough for me, I'm using scopes from here on out. I live in the west, and the .223 suppressed shooting 60gr V-Max with a scope seems like an ideal combination for my territory
I day and night hunt with thermals all over Missouri and I have not found a need to go beyond using 223/5.56 with 55gr polymer tip or hollow point. Taking proper shots under 200 yards with a decent shot will generally do the trick.