I see your point and have no issues with the original post.
I have great respect, though a bit unscientific, about the ability of the human eye, along with great optics to discern things.
My favorite practice spot has a very large boulder, the size of a storage container, at 1177 yds. When mirage isn't running badly, I "see" group sizes within parts of an inch
, from the bullet splat. I'm confident that taking the 2.5 hour walk over there would reveal a fairly large difference. Its still to me good for visualizing the group being in the kill zone of a large game animal with the goal of making the shot in the kill zone of a very small animal. Good enough for me.
I appreciate your diligence. If you ever pass through Idaho gimme a holler. We'll put the thump on some rocks or somethin'.