I've been shooting the same 12ga ammo for years. Left them in the original boxes and put them in a .50 cal can. Not climate controlled. They've been fine.
I shot a lot of surplus 30-06 in the early 90s that was produced in the 1950s. Stored in ammo cans. Never a hiccup.
I shot a lot of surplus 30-06 in the early 90s that was produced in the 1950s. Stored in ammo cans. Never a hiccup.

