The Churchill method as I understand, suggests that to correctly modify a stock one should use a pattern board and apply a formula. I believe it is: move the stock 1/16" for every 1" off based upon the center of your pattern shot at a mark 16' from the shooters eye; hence The Rule of 16s.
I assume that the bend is measured at the butt not at the nose or the cheek or the comb. So if your pattern is 2" to the left, the BUTT needs to me moved 2/16" to the right creating cast-off for a RH shooter.
My question is where is the measurement made?
Hi Mark,
You're on the right track but have several important details wrong. First, it's 16 yards, not feet. Second, your eye, not your butt, needs to be moved 1/16" for each inch of correction movement.
The ratio is established between the 16 yards to the target and the 1 yard(approximately) from your eye to the front bead or muzzle. Therefore, to move the impact 1", the rear sight(your eye) needs to move 1/16", in the direction you want the impact to go. Also, it is important to mount the gun and shoot quickly, no correcting or aiming. You're trying to correct how the gun fits you, not learn if the gun shoots straight. That should have been done first. You also need to have established a proper and consistent mount, beforehand.