Thread: serious moa question

We had a bit of fun in the other thread about consistant accuracy. A few snickers bars got handed around and all had a bit of a laugh but now i have a serious question. I have noticed while tuning loads that some pills seem to "go to sleep" further out. I see it more with high bc pills where group size at 200 or 300m can be the same size or smaller than that at 100. I have some theories on why that may be the case but am curious as to who else has found the same and if there has been proven theory about why it happens