OK, I think I'm making progress. Out of ammo for the 243 for now need to reload some more. Shot the 308 again this morning, no wind!!! I mean there was no wind, but I did get covered in ice pellets.
First pic is 5 MOA up per JBM for my 175 SMKs traveling at 2600fps. No wind, spin or Coriolis adjustment.
This picture is with a .3 MOA left for spin and Coriolis called for by JBM. First two shots were to the right. I then made an adjustment that I have never done before, I moved my trigger arm elbow more forward perpendicular to the rifle, kind of a right angle to the gun, and shot 3 more. I think this made the gun recoil more straight back then it was before steering the bullets to their POA.
What do yall, think?? Sound like I'm on to something?