Posted by T. HARPER on May 25, 2007, 8:12 pm, in reply to "Pyrodex Shotshells"
Pyrodex is far more corrosive then real black powder. Pyrodex contains potassium perchlorate.This is highly corrosive stuff.
Read this for more info on BP fouling:
http://www.republicmetallic.com/page20.html
Best of luck!
T