"Gunfitting" by Mike Yardely. Excellent! Agree completely.
LOP can be measured with a simple tape measure - distance from facd of (front) trigger to center of butt. Drop can be measured by laying the gun on a flat surface (kitchen table maybe) and measuring the distance betwen the table top and the comb and heel. Pitch can be measured by setting the gun against a wall with the butt flat to the floor and the reciever touching the wall. Measuring at 26" of barrel length is one standard.
Cast is a bit more involved and requires some special tools or techniques.
