[jofreder]

I'm no instructor but you should base your selecting lefty or righty on how well you actually shoot and not how the gun fits in your left hand vs right hand. Your left hand might be bigger so you get an extended finger for better trigger feel but that does not mean you are a lefty.

I had a fellow LEO in the academy could not hit crap. When our town qualified us the instructor was perplexed until he made him shoot Lefty and then he starting hitting the target.

Try shooting lefty and see how well you do with all your guns that should be the real judge.