My flinching has been seen by people three feilds away. Not world class but high AA. Flinching can be caused by both muscle and neuro problems. We all have the odd muscle spasm or twitch and that can cause our trusty trigger finger to go early or even refuse to go at all. The brain can have several different causes. The dread of recoil can cause the brain to cause a flinch, it just hates the recoil that it is about to cause. The second version is when the sight picture just does not look right and the brain refuses to pull the trigger until it looks right. Sometime a cross firing with mixed or off side donmint eye can be the cause.
Cures are just as complex. Identify the cause and the cure often is fairly easy to figure out. I used my middle finger, for my trigger finger for over a year to get past a flinch. I have used sight blinders, dots of tape on glasses, cast off in stocks to reduce face slapping. You name it and it has been tried. One fellow went to shooting left handed to get away from his flinch. One fellow shot .410 only for two or three years because he flinched. Became a real good 410 shooter and had a ton of empties to share. Shame he did not shoot the 28 to get past his problem.
If you start having flinching problems the only thing to do is go back to basics firts. Was the gun mounted well? Was you head down on the stock? Did you see and track the bird as normal? Do you follow through the shot? Has the trigger pull on your gun changed, too light or too hard? Are you crossfiring? Pick it apart, the answers are there.
