Came across this website, this place shows some of the best ballisticsI have seen for ammunition, click away and check out your favorite caliber ammunition.
http://www.cpcartridge.com/index.htm

If you want a good free ballistics calculator go to the link, go to the ballistics button, then click the English ballistics button. You can put in any bullet you want, change the muzzle velocity, wind direction and speed, and height of scope.

http://www.norma.cc/sida/eng/index.html

A little box will pop up while the calculator is loading. Do not close this box, it needs to remain open for the calculator to run.

Here is another good one.

Big Game Info

Paul