I haven't had windage drift but I have had elevation drift. Had this happen 2 times, first was after about 4K rounds & second was about 1K before it happened again. It was pretty significant, roughly 4" low at 10 yds. Which really hurts in matches & especially steel targets. Both elevation & windage adjusters have very prominent clicks when adjusting. Not sure what the issue is but definitely gonna keep researching it.