I've just downloaded the article on the .375 x 2.5 it is a fascinating read with information that was new to me and I'm sure many other Lee Speed enthusiasts. Who would have thought that the early .375's were built on actions based on the SMLE Mk1 with charger bridge. The photo's are excellent, especially the photo's of the Mk1 .375 complete with engraving on the side of the charger bridge matching up with that on the sides of the magazine.
If this article is an indication of what we can expect with Jeffs book, it will be an absolute cracker.