Pglasgow,
In windy conditions shooting at game I too would limit my shot distance as you said. I'm not sure I would take a 200 yard shot at an animal with the PRB anyway due to the low retained energy.

One thing I noticed about your figures is that you ran them at sea level, I ran them at 6500 feet which is where I typically shoot. I figured the BC of the NE based on shooting at that altitude and calculated it based on range performance, i.e. sighting in at 100 yards and shooting at 200 yards and averaging the drop. Then I put it into the ballistics calculator and played with the BC until I got a match. I know its not the best way of doing it but figured it would get me close. I came up with a figure of .250. I also weighed the bullets and they averaged 455 not 460 +/-1 grain.

Most of the time I don't consider the wind when looking at the ballistic charts. Often when shooting in the mountains and shooting from ridge to ridge the wind can be going in opposite directions from where the shot is made from to the target. If the wind is strong and steady that can make a difference but if just a light breeze it could very well be swirling in different directions at different locations. There is no way to be sure in those conditions so it becomes too much of a brain twister to try and second guess what will happen in those conditions. If there is more than a light breeze I just limit my shot distance if I'm shooting at game.