Long range farmer

Yeah if I point at something with my arm iam left eye dominant but when I point using the gun I’m right eye it’s baffling me

Has anyone had similar issues when I point at something or look through a cd and even when I went to the optician I’m left eye dominant but when I am holding a shotgun what ever I'm looking at lines up with my right eye as if I’m right eye dominant. Has anyone else had this problem it’s getting frustrated now as my instructor is saying I’m right eye and my optician is saying I’m left eye