Originally Posted by SaskShooter
I've just started to shoot both eyes open. I find it helps me relax, and keeps me from blinking, which used to be a problem.
It also allows me to check my bubble level and focus knob with my left eye, without breaking cheekweld.
Originally Posted by MontanaRifleman
Both eyes open. That's the way I was taught and trying to close one eye actually puts stress on the other for me. Depending on situation like lighting I might squint the non sighting eye a little.
+1 to both of these.
I know I vary this depending on the situation, but largely both eyes are open. I sometimes wink to sharpen my focus on the scope picture, but then allow my off eye to open again to look downrange, check my bubble level, etc... I used to think maybe I was cross dominant, but all testing is to the contrary.
Come to think of it, I have always used both eyes since before I shot! I remember well people finding it strange I played Duck Hunter on the NES with both eyes open at age 4 or 5. Just seemed natural.