Blinking is natural and it's our body's way of providing the required moisture to the eye by irrigation using tears and a lubricant the eyes secrete to the entire eyeball to keep it from drying out.
Eye blinking symptoms include both an increased and decreased rate of blinking. Most of the time, increased eye blinking results from eye irritation caused by bright light, dust, smoke, or some foreign object in the eye. Allergies, infections, and dry eye may also increase the rate of blinking. Conditions of stress, anxiety or fatigue may also lead to increased blinking.
I don't want to alarm you or anything but anything outside normal conditions, you might want to have it checked. Hopefully, it's nothing to be alarmed but better safe than sorry. When was your last eye exam?
More often than we are willing to accept it, call it whatever you want but we are our worst enemy. Everyone blinks and flinches; how we control or manage it is what matters. All my magnum rifles have muzzle brakes but had them without for many years before that. Yes, I admit that I flinch and anticipate the recoil, including my .22s, but it's controlled and happy with the end results. During load developments, I always have my .22 to keep me occupied between shots/cooling period … and of course practice, practice, and practice with my trigger control.
Good luck and happy safe hunting/shooting.