It’s based on my first book, Rapid Fire (which came out 19 years ago) and contains similar general information about the development and use of automatic cannon 20-57 mm, but with two major additions, consisting of comprehensive listings of every case-type of ammunition, and every automatic cannon, I could find data on. So the book will be several times the size of Rapid Fire.
It has only been possible to do this because of lots of help from others who specialise in particular areas, as well as much information posted on this and other forums.
The first draft of the text is complete, but I still need to trawl through all of the sources I have collected to ensure that I haven’t missed anything, plus provide illustrations. The ammo isn’t a problem as I possess examples of virtually every case type (including replicas), but photos of the guns and installations which are free of copyright are patchier!