OK ammo gurus ...... Gotta question for you. What is the difference between Gold Dot Personal Defense ammo and Gold Dot Duty Ammunition? Specifically I'm interesting in .40 S&W 165 grain... The best I can tell both Personal Defense ammo and Duty Ammunition use the same bullet.. GDHP. Soooooo .... what's the difference... which is best? Thanks Bear Wanna kill these ads? We can help!