George, I've done tat with BP but not any of the subs. When i was a kid we made alot od BP and got in trouble with Dad more than once
3M corp had a plant not far from our house where they made battery acid and we could get all the pure solfer we wanted. It was laying all over the ground. The local drug store sold salt peter and charcole was no problem.
We made some really powerful stuff and it's a miracle that none of us lost a hand or worse. We made a connon out of a 2" pipe once and the thing worked the first two times loaded with powder and rocks. The third time it shattered and pieces went sky high. As an adult today I wouldn't even think about makeing it!
