Is there a shelf life on primers, or, after so many years do primers go bad. My father recently gave me his reloading equipment. Along with it came a bunch of expendables including primers(and .308 bullets; guess I am going to have to buy myself a .308). He bought this equipment when I was kid and I will say that all the expendables are over 30 years old. I believe they have always been stored in clean, dry places. I am figuring they are fine to use, but would like others opinions on the matter. If you believe that it is not fine to use older primers, what is would be the proper way to responsibly despose of them. I would like to shoot them. There are a bunch of large pistol magnum primers. Guess I will have to buy a .357 too.