Personally I haven't heard much about someone switching eyes too much with a gun, or whther it has been succesful. I do howver know a man who trained himself to shoot left handed with bow, that is he was able to train both eyes to be used, depending on what bow he was holding. I don't believe you could call it changing dominance, but he has the skill to shoot either way. Plus i hear that forcing a child to change eye dominance can cause some pychological problems... Finally, my brother, a southpaw shoots a gun left handed (left eye dominance) but shoots a bow pretty well right handed (bow in left hand, arrow drawn with the right) with his left eye dominance. I guess the point is, put you mind to it, and practice with it frequently. Good Luck!