Thanks Paul - I have the Speed book and the Olson book, but not the Womack book. It must have been great to chat with Olson and Womack. I've spent many hours reading the Speed and Olson books, but the books are in Europe at the moment and I am in the US. I don't recall if there is any mention of 'renumbered' guns. I also don't remember if there is any discussion or table dealing with the markings under the barrel (7,85..8,15, etc.). It's still a mystery that neither of these figures converts to either .318 or .323.

Would you recommend buying the Womack book?