In response to several previous email inquiries, allow me to share the following.
I might add that Walter Roper was a prolific writer who documented his "obstinate" efforts to improve shooting scores by refining the engineering science of handgun stocks (which we refer to commonly today as grips). Of particular interest is Walter Roper's Experiments of a Handgunner published by Stackpole & Heck, Inc. in 1949. In Chapter 7, Pgs. 79-101, Roper discusses his initial motivation to explore from a mechanical engineering viewpoint the science of hand shooting in terms of grip, hold and aiming.
Roper discusses his first attempts at making prototype stocks which would supply the most effective characteristics necessary to improve scores. The volume illustrates stocks Roper designed for a variety of hand guns including the Luger, Single Action Army, .22 automatics and air guns.
The volume covers a plethora of other issues which the hand gun enthusiast will find of interest. For example, Roper writes in detail about the various woods he selected for making stocks and identifies the characteristics of each. Roper did not fashion the stocks, but rather did the design work based on his principles. The actual work was done by several others whom he describes.
This volume is available on Amazon and is reasonably priced. If you are a Roper enthusiast, it is an essential reference source.
I hope this helps.
Richochet