You mentioned 150 yds. I don’t know the answer to this question, but in addition to other factors, I wonder what time-to-impact is from barrel to head at 100 or 150 yards? Add that to rifle lock time, plus human reaction time, and I think there’s enough that a deer could move its head an inch or two (?) from where intended. Then to that distance (whatever one assumes), add the radius of your gun’s grouping at distance. Then … after that, add some sort of honesty factor distance of what distance error you might introduce under the pressure of a shot.

I’m not good enough I don’t believe. I still get shook up shooting a deer to some degree