I was looking around the App Store the other day and I ran across some reloading apps. I downloaded a few. The two best being from RCBS and Winchester. The one from RCBS is a reloading calculator, you put in all your components and the amount and price, how much powder you're using per round, and how many times you're wanting to reuse you brass. Then it gives you the price per round with quantity. You also have a option for shotshell. The Winchester app is very cool. You can go through different ammo categories and then you can pick your caliber, bullet weight, round type (FMJ, SP, HP, ect) up to 3 calibers, then conditions like wind, temperature, distance, ect. Then you hit "shoot" and it gives you bullet drop, drift, ect. Both apps are free and I highly recommend them for any shooter and reloader.