The factory ammo, Hornady specifically, supposedly got way slower after the first rollout. What powder are you using?
From what I remember, Hornady changed their recipe but left the box data the same. I shot some and it was around 2800. From my notes, Federal 175eldx was the most accurate factory loads I shot. 3009fps avg. & shot a .64MOA group at 100yds.
I'm using 76.7g of N568. SD is around 4. consistently 1/2 MOA at 600yds, sometimes I'll squeak out a 1/4 MOA group.
Here is a 7 shot group from two weeks ago. 8-10mph gusts from my 8 o'clock. Didn't hold for wind, you can see the center 4 were between gusts.
![[Linked Image from i.postimg.cc]](https://i.postimg.cc/kGQW1FP6/IMG-2164.jpg)