The thing to remember is you want a storage appliance that will not tightly contain the stored powder in event of a fire. In other words, a container with doors or a lid that will pop open at the slightest pressure buildup inside. A heavy steel/wood container that is as secure/strong as a gun safe would be a big no-no. Risk of explosion is nil in any event (we all know how smokeless powder burns outside of a gun chamber), but the awesomeness of the fountain of fire is increased by a couple of magnitudes if the powder gets going inside a tightly confined stout container.
Last edited by gnoahhh; 10/04/16.
