Um...I think it was added as an anti-caking agent, but it helps in other ways...(iirc) it helps to keep the granules from breaking down farther when jostled against each other, but unsure where I learned that. Glazing of the powder started before they used graphite. Until I learned that, I thought that "glazing" was the term used when they added the graphite in the first place.Is this why graphite is used as a component in black powder?
I think you have much more chance of something bad happening to you from firing a black powder muzzle loading firearm than you do from static electricity setting off your powder.....of course if you get struck by lightning while wearing your horn, all bets are off.....
LD