Knowing the formula for black powder and making it is two different things. I had a friend who made some many many foolish years ago. I even helped him a little. He thought he made it right. One spoon full would pop and the next would boom! No consistancy. Plus there is the danger of making it. Many homeowner insurance policys might not take a new hobby like that very well if you were to re-arrange the furniture big time. Lets just hope this is all a nasty rumor with no basis.