X-Trooper has it right. I too am a dyed in the wool revolver man and my JOB would only allow semi auto's if you were in our stakeout unit or K-9 back in the stone age. After several shootings where officers needed more than 6 or faced multiple assailants, all officers were permitted to transition to semi auto's. Granted, this is the late 70's and early 80's but police work stays the same. If you must use the revolver, use the round that you are most comfortable with and can fire accurately and rapidly the best.