Good info all around. On the black powder storage. Because it is a true explosive and easly ignites I wood take care in my storage practices with any volume. A reasonably safe method for storage is to keep it in a wooden cabinet constructed with 1″ thick boards. Wood is non sparking and the thickness will provide protection from fire, plenty of time for you to evacuate the premises. (Bty the same type cabinet can be used for flammable liquids).