Ammo Storage

[dasabighole]

Sealed Ammo Cans is the ticket

As long as you store your ammo in an airtight metal ammo can with good seals, I don't believe humidity/temperature is going to be a factor.

I was Marine Corps Ordnance and we stored ammo on pallets inside non climate controlled earth covered barricaded magazines. There was open ventilation through slots in the front walls but otherwise that was it. The earth cover and barricade served to keep fire out as well as controlling blasts if anything went high order.

 

[Rpg]

I've never been fussy about storing ammo.

I have a bunch in the unheated garage stored in original boxes and flats (mostly shotgun ammo).

I have a little in 50 cal ammo cans and lots in cardboard boxes in the basement.

I have some in closets in duffel bags in the house.

Never a problem in any location.

 

[Father Joe]

For years I stored my ammunition in their cardboard boxes in a cool, dry linen closet in the hallway with no problems.
Then when one was available, in a locking metal filing cabinet in my office----again no problems. This was an old style, used, heavy duty filing cabinet unlike the thin metal ones being sold today.
With the addition of a shotgun my storage needs outgrew the filing cabinet so it's milsurp 50 cal ammo cans now. Still no problems.

 

[federali]

The Cool Dry Place

I think the perennial advice to store ammo in a cool, dry place began with the advent of paper shot shells. these would swell to the point of not chambering if exposed to dampness or moisture. Current plastic shot shells are immune to this.

I keep a dehumidifier running in my basement during the warmer months and not only have I not had a problem with any ammo but even 30-year-old gunpowder and primers function without issue. Regarding below-grade basement storage, store things high, away from the floor. Dampness and mold formation are at their worst near the floor.