Originally Posted by
Skinny Paul
Hi all.
I found this forum by accident and I'm pleased to meet you, I have read through a lot, but there is so much info. I'm a pyro guy with a passion for black powder rockets, however, I made a .44 cal 12 inch cannon, my powder works really well. I bought a 20kg bag of KN03, fertilizer, which has lasted 10 years, and I have plenty left. Please believe me, it is not pure. Google Richard Nakka rockets, this guy is brilliant, under fuels, go to 'purification'. The process is a pain, but worth getting 99% pure KN03