APG
45 Cal.
I was wondering which containers are the best for storing black powder. I know the original containers are best but I've purchased some powder from a fireworks supply company that has bulk powder but will repackage it in 1 pound metal containers for shipping. I have empty plastic containers of the same manufacturer. Which would be best for long term storage ? The containers it was sent to me are not sealed so that's not an issue. Leave it in the metal or transfer to plastic?