I know that I am more than capable of throwing a round off target, believe me, I know. My old single shot is well rested, equipped with enough magnification to see what's going on.
With that being said, take note of the last shot in the second row, fourth shot in the third row as well as the stray (fourth shot) in the five shot group.
I am confident that I was on target pre & post shot.
Even with TenX or Midas, I see the same thing, not a soften though.
With all that being said, does anybody sort by weight and/or rim thickness? If you do, can you tell a difference?