It does go stale, ladies and gents. Buy a crap ton of it when it's cheap,. Shoot the pxss out of it when you can, give it to the kids or the boy scouts,. Whatever.
i kinda figured that it does although ive never looked into it to find truth. had some issues with some of my 22 that had been in the safe for a few years. not i just try to buy what i need when i know im gonna be shooting it