Yep, when you fire a shot the bullet will be on target where the muzzle was during recoil at the instant the bullet exits the muzzle. Change your grip even slightly and you have changed the recoil and the position of the muzzle at exit. Two bullets cannot go to the same place on target when fired with two different muzzle positions. Just as a reminder for anyone that may be new, the revolver is moving and the muzzle is rising under recoil well before the bullets exit.