Originally posted by J.D.Randell:
Powder containers are specifically designed to do minimal damage if they ignite. (Like in a house fire.) You may find that local, state, and federal law prohibits storing reloading propellants in other than their original containers.
If you put the powder in a different container, you're potentially "building a bomb." This may have safety issues, but it can additionally have legal implications.
READ this link: (please!)
http://www.reloadbench.com/gloss/storage2.html