anyone that cannot read the wind within 1mph at 600 and be able to tell what its going to do the whole time, does not nearly have enough practice to be thinking like a 600 yard shot. It takes work but 600 is very readable. Granted 1000 becomes a bit trickier and that I've not shot many times at 1500 and beyond yet, so don't really have a good grasp on it. Though I will say that I've never been off much more than about 2-4 feet at 1500-1600 yards. The problems compound as you get further out. Group size becomes an issue, as does time of flight, and the nuances of differing layers of wind, plus the fact of the arc of the bullet taking itself up pretty high into winds that maybe layered into things not visible at that height off the ground....
500 is still a chip shot for a capable shooter.
Jeff
