My next door neighbor gave me a bunch of old powder for reloading. It is mostly in the original containers sealed cans. I have no idea how old it is ,or if it is any good use. My question is how can you tell? My son is just starting to get into reloading. I will give this stuff to him next time he comes home. I just don't know if this stuff is worth messing with. I also got a bunch of die sets and brass. Any info you would be helpful.

thanks Jay Pea