I have that book by Klups and another Schiffer book on double rifles. They are some good books for quantifying the nature of drillings with good and lesser qualities described within. You might be able to decide what you want to buy after reading. But what I want and what I can buy are two different things. Good reading to you. Be Well, RZ.
That is interesting book to read. I knew they made actions from steel, Dural/Ergal. I actually learned something from that book and that is they made some actions from plated brass and or bell metal. I did not know that fact before.