Stop in for a cup of coffee

Rolled a handful of paper cartridges last night. 4 with just powder for misfires and a 90 gr FF with .69
My buddy was asking for his powder back as he's going upstate and might want to shoot.
No idea when I'll get a chance to use it.
Can you even get black powder any longer? The German stuff was the only thing for a while there... and that is $$$