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Actually, the Dram Equivalency labeling seems to be on it's way out, in a hundred years from now it will probably be gone. You may have you noticed, more and more shell boxes have the velocity as well as the DE indicated.
Near the end of the 19th century, when folks were acclimated to black powder loads, telling them the dram equivalency of a new smokeless powder load made sense, and eased the transition from black to the new powders. From my perspective, the transition period could have ended years ago. Of course, now we have a new dilemma: if we're gonna label shot shells with just the velocity and omit the DE, then shall we use feet per second or the international meters/second? We could do both, and some day in the future someone will post in a similar forum, "What's 'feet per second' mean?"
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