Which brand? Golden Tiger or the demilled stuff? If it's GT you can contact them directly as they have a 100% satisfaction guarantee and will refund your money for the unused ammo you have left when you send it back to them. At least that's what their website claims. If it's the demilled stuff you're probably SOL unless SGAmmo will do something about it, which I doubt. ETA: According to their site, SGAmmo does take returns on defective merchandise. Not sure if that applies to demilled ammo made in the 70's. If it's GT they should help you out.