I have been buying ammo lately in the 380auto caliber knowing it is a more expensive caliber and with the thought of ammo prices only go up and never down. Can someone provide me with some suggestions of storage? I want to keep it locked up, and my two shelf safe is now starting to become full. I didn't think ammo cans can be locked without modification, so my next thought was to just find a large box with a lid that cab be padlocked. Thanks in advance for any suggestions.