[B4Ranch]

The depth of penetration and the wound channel are very similar will all the rounds illustrated in the picture. These will indicate the effectiveness of the cartridge.

[Yosemitest]

Most Security Police in the USAF don;t care for the 9MM due to lack of "Spin Around" effect.
They much prefer the .45 first, and the .40 second, and they don't like the hearing damage from the .357.
The .40 stacks more rounds in the mag over the ,45, but given a choice, they'd rather have the .45.
However, Lt. Col. Oliver North, s a true combat-experienced veteran, preferred the Sig P226 9MM for many reasons, mostly the 20 round stack, and the SA/DA selection switch.

[556x45]

Not really. The pic shows a narrow slice of info, penetration and perm wound cavity, for the tested ammo. It tells you nothing about other important qualities such as barrier penetration, recoil etc. or anything about other loadings. When the big picture is looked at 45acp doesn’t stack up well to modern catridges. However, its better than nothing at all. If you’ve practiced with it and a particular platform thats whats really important: that you can effectively deploy the weapon if necessary, hit what youre aiming at and make effective follow up shots. My bet is most 1911 advocates can’t hit and find the administration in an emergency undoable. The more administrative tasks there are the less effective the weapon will be. Loss of fine motor skills make it an inevitability.