If you spend the 15.00 for the LEE ballistic program it has a ammo cost calculator, you just enter a couple values it asks you for and tells you how much it's costing you. The cool thing though is you have a bunch of other calculators and logs as well as the ballistic program itself. It's a great program for beginners or guys like me that aren't going to shoot much past two or three hundred yards and usually more like under one hundred since I'm shooting revolvers. If you ever get heavy into it the get a more advanced program. They actually have the program on closeout special at Midway for 11.00 because it's about 4 years old which of course in anything technical is an antique.

Here is the link to Midway.
http://www.midwayusa.com/product/100131/lee-the-shooter-program-software-cd-rom

I won't be wronged. I won't be insulted. I won't be laid a-hand on. I don't do these things to other people, and I require the same from them. John Wayne-The Shootist