Can't wait to see the answer, Bunky. I stocked up last time I bought, and haven't burned much powder since, so at least I'm good for now.
Update: After an interent search, I found a possible email address, and just sent off a request for info. The website listed is not functional.
Address: 232 West 5th Street Oswego, NY 13126 USA
Voice: 1-315 343-1111 Fax: 1-315 343-0497
Email: [email protected]
Contact: Thomas Decare
Also, I found a related topic that I found interesting.here: http://ctmuzzleloaders.com/ctml_experiments/corrosion/corrosion2.html