There is a long-standing misconception in the gun industry that you gain an advantage by using a pistol with your weak hand when you are firing from behind cover. This comes from the idea that you expose less of your body and provide a larger field of vision for yourself, but Rob Pincus explains how this is entirely incorrect. When you switch your weapon to your weak hand, you lose all the strength, coordination, and marksmanship ability that you have developed with your strong hand.