I would like to maqke a couple of points which I am sure you are going to take issue with.
I was taught the term "New York Reload" came from carrying a second revolver and this practice was actually encouraged by the department. I don't know the circumstances of Officer Gadell's death it appears from your post that he was not carrying a second gun.
Shooting at a suspect 41 times with only 2 lethal hits is poor marksmanship. I don't care how you want to spin it no caliber or bullet style is going to make up for lousy marksmanship. Nor do I believe it is fair to cast all the blame on the department. Every officer has the opportunity to practice shooting when they are off duty.
The NY reload was encouraged, but some cops didn't carry two guns. Some cops couldn't afford the second gun. Even if he had it, he'd ben fumbling to load that second gun 3 seconds later then if he only had one. The issue that caused his death wasn't lack of ammunition, but speed of reloading. his revolver was found next to him, cylinder open, and one or two rounds in the cylinder, with the rest of the loose rounds spilled onto the floor.
As for the poor marksmanship, they hit him 19 times out of 41, nearly 50%. Two rounds proved fatal. While we are all entitled to our opinion, one educated opinion is worth more than 1000 non-educated ones. And unless you have been in a real shootout, and in the conditions that these guys were in (not ready to fire when the poop hit the fan), you can boast all you want about your stellar marks at Blackwater, but it means nothing.
If you do a search for the Diallo shooting, you'll see the whole story, but the short version is this: Diallo was approached by 4 plain clothes anti-crime officers because he fit the description of a serial rapist. he ducks into an unlit vestibule at the approach of the cops. One officer climbs the 3 steps to stop and question him. He asks for ID. Diallo turns with a black wallet in his hand. The officer yells "GUN!" and fires one shot, while stepping back. He falls down the steps and breaks his tailbone. His 3 partners believ him to be shot, and they fire. The rounds richocett of the brick and blow out the car windows. The "ear-witnesses" testify it was over in less than 6 seconds.
Now, how many will you fire if you think you're about to die? And how will your marksmanship be?