Except...we aren't discussing trajectories. This method was never intended to be accurate beyond supersonic range. You shooting to 1,400 yards isn't relevant to the discussion. It is meant to very quickly get you to within 0.1mils of actual drift all the way to 1,000 yards. It does this exceedingly well. That is why it is possible for instructors on the line to call wind for radically different calibers and switch easily back and forth between them. Show me a consequential difference between G1 and G7 models of wind drift within a projectiles supersonic range, and then you will have a point to stand on.