Every combination of shooter, shell, gun, and conditions will produce a slightly differing torque reaction....
....cognoscente....may well recognize this issue when they encounter a large enough variation. Even so, only a few will take the time/effort to investigate, analyze, and effect a cure. My hat is off to Miller for the suggestion and Stan for enlightenment....
It would still seem to me that an important part of good consistent shooting, muscle memory, gets thrown out the window.
I believe some assumptions might be made here. First, that the gun is properly regulated, and that it's up to the shooter to apply unique torque control for the situation. And, it would seem that gun fit becomes significantly less important.
I think there is a real world application for the thought. It may not be necessary to alter classic guns if a little enlightenment can accommodate for less than ideal stock dimensions. It wouldn't bother me to connect at fifty percent on ducks shooting head up on something with too much drop. I'd have my doubts though if a top shooter could maintain a high performance level.
Definitely only thoughts, and I'd fully agree about hat's to the handful that would take the time and make the effort. It is interesting, and I would be surprised if Stan doesn't come up with a few things to try that might move a pattern.