If you use good, round, hard shot, good wads you probably should compare your shells and cost to new AA or STS shells. I believe they contain better components than the promotional shells. You can also save the hulls(at least the STS) and sell them for 4 or 5 cents to a reloading friend. However, the main reason I reload is to have the low pressure, light shot and lower velocity loads to use in my older guns. I don't think you can get this in the $3 per box stuff. I also have lots of good, original AA shells and lots of time. I'm satisfied I save money as well.
JL
An easy-to-use cost calculator:
http://www.trapshooters.com/reloadcalc.htm
