I finally got both the BKLD4 and the new Hawke 3-12X44 Varmint II mounted and zeroed on the 460. It was actually calm at the range this morning, so I took a few groups at 38 yds for zero, which seemed OK but not that great, but also didn't seem to move much. I also tried an even more gentle Artillery Hold, nestling into the sandbags until I could almost let go of the gun completely, just barely touching my cheek to the comb, and using just two fingers to pull.
This was the result at 100 yds:
Ignore the .45 holes from the next guy over!
So maybe my damn POI shift is really gone...I sure hope so

It's only taken five months and a couple hundred more dollars!
Duncan
PS, I was too busy trying out my new RWS 850 to shoot more groups....besides, quit while your ahead, I always say!
