I carried a revolver on duty for 32 years, actually I carried two the first one was replaced because my agency rightfully determined they were not strong enough, that was a S&W mod 66 .357 mag, the next was a S&W mod 686 .357 mag. This was during the time that the 15 round magazine mania was running wild among police departments in the country and my state. Quiet frankly, I never felt outgunned because I practiced religiously, I was a firearm instructor and we qualified 3 times a year, one daylight, one nighttime and once winter, cold weather with heavy winter uniform. Our officer could shoot their service weapons and at one time we had to shoot one course of fire from 50 yards. That mod 686 is still my favorite handgun, I rarely carry it any more, it was presented to me when I retired, because it is hard to conceal, I usually carry a Kahr MK 40, however, it has a 6 round magazine so I have 7 rounds with one in the chamber. I have always subscribed to the Bill Hickok theory of gun fighting, and that was "you can't shoot fast enough to make up for poor marksmanship". I am 70 years old, and I still qualify once a year in order to maintain my nation wide carry permission as a retired law enforcement officer. The qualification is a 50 round course from 3 yards back to 25 yards. It includes drawing and firing a required number of rounds, either 2 or three and re holstering for body armor drills, drawing and firing and emptying the gun and combat reloading. The course is shot with a silhouette target, the kind with the bowling pin shaped kill zone in the center from the head to the waist. Each hole inside the bowling pin is 2 points and each hole outside the bowling pin but still in the kill or disable zone is one point and there. 3 of those holes must be in the head for the body armor drill. At 70 YO, I scored a 98 out of 100, except for the 3 in the head and 2 outside the bowling pin but in the scoring zone, I had a group the size of a saucer. A 15 round magazine would not have helped me shoot better. Any training program should be instructing people to take cover when available and not stand up like an old west gunfight. Take cover and let the guy with the large capacity magazine empty it and then nail him if you have a chance or before he runs out if you get the chance. As I remember the police wanted the large capacity mags because the pukes on the street had them so their department bought them. Heck, most of the people I dealt with had rifles or shotguns so a 15 round mag would have done me little good. This is just one of those things that all people will never agree on, fun for discussion but that is about it.