When I first started loading, I took a look at energy per unit weight as a measure of economy. That is, how many shots per pound would I get?
It is a false economy, of course. Powder is fairly cheap when considered among the other components and unless you are interested only in maximizing the number of bangs per pound (that is, accuracy or maximizing power for pressure or safety) one should choose powders based on overall performance instead of one single factor like economy.
It is a legitimate question, "What is the most energy dense powder?" But it is also legitimate to ask what the O.P. intends to do with the information. Is it for economy only?
Last edited by Lost Sheep; October 18, 2012 at 10:16 PM.