Since the poster that I asked won’t answer-
A flinch is a subconscious reaction to the movement of the rifle causing recoil bracing; a reaction to the flash, blast, and noise causing an involuntary closing of the eyes and muscular contraction to “brace” for those as well.
It is subconscious- someone that has a flinch can not consciously control it by “trying real hard”- the more someone try’s to fight it, the more ingrained it becomes. Getting smacked in the shoulder and face, and having massive noise, concussion and blast two feet from your head has a natural protection reaction in your brain- get away from it, and/or brace for it.
All that dry firing does is program even deeper in your subconscious exactly where the trigger breaks so it can short cut what it does to “flinch” to brace or react better.
“Aiming”, or the desire to hit the target adds another layer on top of flinching- anticipation. The desire to hit the target, and the subconscious and conscious knowledge that the sights are moving and the will move even more when the gun fires, causes your sub subconscious to try and control/command the gun to go off when the sights are “there now!”
Flinching and anticipation are different, yet are interlinked- two sides of the same coin as it were. They feedback loop to each other- the more you flinch, the more anticipation kicks in to force the gun to fire “now” because the sights won’t be there for long due to flinching. The more you command the gun to go off, the sooner your mind sends singles to “flinch” (brace) to prepare for the recoil/noise/blast. On and on.
Dry fire is not how you control or eliminate a flinch or anticipation.