Lemme get this straight -- are you saying you have some loads and you have no idea whether they are some yahoo's hand-grenade reloads or GA factory reloads? If so, how do you expect US to know??
My friend, you are free to shoot them up if you wish, but I would not, nor would I recommend anyone else do it, without knowing where they came from. I'd either pull the bullets and reuse the brass, or throw them away. You're on your own.