Real fast, ’cause I got an errand to run… I would vote “no” on that for powder storage. BP comes in 1lb cans. Putting a whole bunch of loose powder in that thing would make one helluva bomb… and that would be bad. I’m going to build a proper storage box. Use wood and line it with copper sheet, storing the individual cans in it. Or, you could use a wooden cabinet, also lined with copper. Thing is, you’re trying to minimize things like static electricity and sparks. A big old steel can? Erm… not so much. It might be fine for liquids, but not BP.
Skylighter is where I got my start. They got a lot of good info there. Will post more later…
The wicked flee when none pursueth..." - Proverbs 28:1