Why not serious ?

Concealed stashes of arms often feature in tv/movies. Nobody ever says "these bullets have gone off".
Obviously the metal parts will have a pretty long shelf life but what about the explosive bit.

BTW my long cycle ride on Sunday was a bit too long. I was suffering from dehydration when I got home.A first for me and I must say I felt like c___p for several hours.

>Oh, sure, it's a cliche scene in movies. Gunfight breaks out, a character checks the fresh date on his bullets and chucks them over his shoulder. "Damn. No good any more."
>
>If your question was serious, I think it would be a few millennia before bullets go out of date.
>
>>Serious question (idle curiosity) for the gun types.
>>
>>Does ammunition have a sell by/ use by date ?
>>
>>Never seems to crop up in movies/tv so is it good forever.