Originally Posted by bigcountry

Only thing that affects drift is ability for a bullet to get from A-B. A bullet does not fight with the wind, like your example of a feather falling to the ground. But in flight it trys to keep even pressure on sides and flies with that. Where with gavity, it does not.

Gravity force and pressure from wind shear are two totally differnet things, and only things affecting it are bullets side area and its ability to get from A-B. Faster it gets there, less drift.