Now I have to go out and try a few magazines left handed, just to satisfy my curiosity!! Thanks Miguel.
I have always been right hand dominant, though I have thought about the ambidextrous practice many times. Sounds to me like you have been fighting your natural left handedness all this time.
Most likely, you are paying more attention to the sights doing the "new" thing. Low left (for a righty) is not a function of whether the hand is your natural dominant hand, it's a function of not looking the shot off and anticipating/fighting recoil (flinch).
There is no magic in the cure other than you are executing proper fundamentals.
I'm right-handed, though I often shoot really well with my left hand. I wonder if shooting with your other hand makes you focus and worry about the fundamentals in a way that you don't with your dominant hand. I would be interested to hear what others think about your story.
Practice, practice, and more practice.I'm right handed/right eye dominant, and I've found the same thing. Shooting slow my left can do as well as my right. When it comes to shooting fast/from the draw, my left can't keep up.