I went back through Bell's work after this topic got started and hoped to find any hints about where to go to find more definitive info. In the article where Bell compares smokeless and black powders, Summer 2002, he lists that he had read several articles realted to the topic before doing the tests. The technical data was dated between 1896 and 1933, and appeared to have some comparison of pressures. The only article he specifically lists is titled "Smokeless Shotgun Powders" by Wallace Coxe of Du Pont. I have searched for this article on the web and a limited search on a University Library I have access to with no luck. The refrence is for sale on Amazon for $40, but didn't want to spend the money without knowing what type of info it held. If anyone has this refrence or access to it, or the others Bell refers to, I would love to look them over or the info shared.
