There are 34 muscles in the hand, wrist, and forearm that work together to MAKE AND RELAX A GRIP
https://www.innerbody.com/image_skel13/ligm27.html One must grip the gun in order to either pull a trigger or relax a release trigger, or we drop the gun. All those muscles are not involved in contracting the trigger finger - 3 do that. And 2 extend the trigger finger.
The amazing thing is that we can volitionally, but with time subconsciously, command our hand to firmly grip (contraction) our gun while, at just the right moment, command our pointer finger to extend. It is my only slightly learned opinion that the contraction then extension has something to do with blocking the dystonia.
The yips, the strange condition affecting sportsmen
https://www.scientificamerican.com/...denly-develop-yips-choke-under-pressure/"something as simple as clenching your left fist before putting or bowling (throwing the ball toward the wicket defended by a batsman in cricket can make a significant difference"
Clenching would be setting the release trigger!
It has long been suggested that not firmly gripping the gun can contribute to flinching.
Guns, Ammunition, and Tackle, 1904
http://books.google.com/books?id=G5ECAAAAYAAJCapt. A.W. Money "The Shot-gun And Its Handling"
The grasp of the stock with the right hand should be very firm, the thumb well over the grip. The right hand guides the gun more than most shooters are aware of, and if not firmly grasping the grip, is not able to do so properly.
A loose grip also is the common cause of flinching, that most uncomfortable but prolific cause of misses.
My swing is much smoother and I am much less likely to flinch if I purposefully tell myself
squeeze the gun before calling for the target.
Interestingly, Col. Courtney cured his flinch after smashing his fingers, requiring changing his grip
https://digital.la84.org/digital/collection/p17103coll17/id/42734
