Double vision

[SBL]

Cleaning the gun this morning after having a bit of a torrid time in the dark and rain last night.
Mounted the gun a couple of times afterwards and noted that I’m seeing the end sight in double in my peripheral vision. If I look at the sight directly it remains as single. I’ve never really noticed this happening before. So I start pointing my finger to check dominance and find that if I look at my finger then I’m right dominant. If I look at the target with my finger in peripheral vision I have the 2 fingers. If I look at the left finger of the 2 my right eye is dominant and remains so. If I look at my right finger of the 2 then my left eye is dominant and then remains so.
I’m now completely puzzled, help!

 

[eightlittlebits]

Entirely normal, called physiological diplopia, also known as "normal double vision".

If you're right eye dominant you use the left image.

 

[Westward]

As above. This is one of those things where the K.I.S.S principle applies.

 

[Luke_(NL)]

It's generally a good idea to keep both eyes open while shooting, certain exceptions allowed. There's youtube stuff out there from TGS, Ed Solomons and others way more knowledgeable, so have a look at what they preach. As a rifleman in origin, i used to squint and aim, but moved on to looking at the clays with both eyes. If the "double bead" throws you off, try pointing at the clay with the index finger of your support hand: For me that helped in having the right sight picture as well picking up the location and speed of the clay much faster.