Black Powder for use in fireworks
I want to get into pyrotechnics as a hobby, and i thought i would start with rocketry.
So my questions are:
What is the best for a lifting charge for fireworks or a rocket,
very very fine particles, or coarse granules?
i read somewhere on the internet that granules are best, but all over instructables it says to grind it really well.
And also, would adding steel powder/magnesium powder to enhance the spark effects alter the BP?
like would magnesium make it more sensitive?