It's funny,,,Over the years I've heard a lot of theories about bullet drift and some of the various reasons for it to happen...High vs Low Humidity, High vs Low Elevation, etc...and while I could never say that any of it is not true, I really question the predictability of the claims...
There is a group in Texas (Houston Area, I believe) that I've read about that are chasing the five shot, one hole situation and have set up a range inside an old warehouse that has perfect lighting, the total absence of wind movement and extra stability built into the shooting benches and are still chasing that dream...
Just as the movement of the earth will have an effect on trajectory at a given distance, I'm reasonably sure that there are other factors that can affect a point of impact, the problem is identifying the factor to the point that one can predict the precise amount of movement that is applied at any given distance and at what speed...Movement of 1/4" or 1/8" at 100 yards is so minute that assigning a causal factor is almost impossible to the point that the shooter can predict the outcome in advance...