There's also that recent case (working from memory) in Illinois, a Sgt. Grimmins, who engaged in a roadside firefight with a bank robber. I believe Grimmins fired over 30 rounds from his Glock 21, hitting the suspect some 11 times, 7 of which were torso hits, with .45 acp hollowpoints. It wasn't until he put three rounds into the face/head that the shooting stopped. The suspect still had vitals at the ER. Grimmins was on his final magazine, with just a few rounds left, when he ended the gunfight. I believe the officer now carries a Glock 17, with two 33 round sticks in addition to his two spare 17 round mags.

There's also that case (working from memory) where a state trooper shot a fat man 4 times in the torso with his .357 magnum loaded with winchester silvertips. After absorbing 4 .357 magnum hollowpoints, the fat man shot the officer once underneath the arm with his .22 mini revolver, killing the officer.

There is no magic bullet, and fights are unpredictable. Picking a good handgun, with proven ammunition, puts us many times more prepared than 90 percent of everyone else who doesn't even carry a gun.