sparky:
I don't usually tout any particular business, and I don't have anything to gain, but I've found LuckyGunner.com to be a reputable, but cheap, source of ammo. They were able to provide some things I couldn't find anywhere else when the ammo shortage occurred awhile back, and they did it for prices that couldn't be matched locally (I'm in Lincoln). The delivery was unbelievably fast, and you know right up front whether the ammo you're looking for is in stock or not. There may be better places, but I was quite happy with them.