I stopped by my local gun store, I was amazed at the price of their ammo being a considerable amount more then of wally worlds. When I asked about the price difference, then man explained that all of Wal-Mart's ammo are seconds and that they only sell first choice ammo. So my question is what makes a cartridge a first or second choice, what does that mean for not only the way it shoots but also how it will affect my firearms and safty.