Well I started shooting at about age 6 and was shown how to tell which eye was my master eye,at that time .I am right handed in everything else even shooting a hand gun.But when I would pick up a rifle or a shot gun ,I would pick it up left handed.I couldn't do anything else left handed.
I just could'nt switch because I always shot well as a lefty but not as well in the last year or so.Probly welding for 25yrs. was no help. ,Ken