My only hang up with old ammo is when the lead bullets........
start to get a light gray film on them, or the brass starts to turn green.

I usually have to clean it up, before I shoot it in my guns.

I only have one old box of .357 left, now that is old and it has the old
Speer, 160 gr. SJSP lead tip bullet of old, in the 50 round box of ammo, that I used for deer hunting with my revolver.

I guess I will have to burn them up soon and load some new bullets?