thank you old guy, do you think that this one of the old compounds from the time between 1880 -1900 when many people have try to make own smokless powder to come in this growing market?

every one knows whats is in blackpowder and how to make it but what is pyrodex, chemicals and compound?

Blackpowder + potassium Perchlorate, sodium benzoate (sp) & sodium? dicyandiamide (sp). (Graphite for coating.)

The last 2 are minor ingredients and trade secrets. the potassium Perchlorate is an additional oxidant.

You can see/download the MSDS on Hodgdon's website.

Wouldn't sodium be pretty corrosive?

I don't know that sodium is corrosive but for sure Pyrodex is VERY corrosive, esp, the fouling. Why not use the real thing? Works better, less corrosive by a lot, and way cheaper. Also doesn't degrade with time.

Brent