As promised previously pictures of the .357 speed die and its parts (left parts) and .38 special speed die parts (right) in comparison. The die body has internal differences, also the carbide inserts are slightly different. Obviously the decap/flare stem and seater stems are different.
P.S. As spring approaches rather rapidly I hope to have at least two and at most three more book reviews up before I officially leave the reading room for the range for the season.