Nikon's Spot On Ballistic Program will let you enter atmospheric condition's and she how that changes the trajectory of your round. Lots of excellent info, you can even get it for your iPhone/android phone. Best of all it's free.
Good luck with that Goat hunt. I hope it all comes together for you.
Thanks! I'm waiting until October for good hair for that hunt. I'll be busy till then hunting elk and moose. I'm on vacation the next three months....;)