[2nd_Amendment_Defender]

The modern 9mm cartridge was ranked very high.

About all U.S. forces prefer the 1911 .45 handgun over the Beretta 9 x 19. There was a rally to dump the 9 x 19 and go back to the .45 ACP because .45 ACP has much more stopping power. 230 grain bullet versus 135 grain bullet. I think they didn't do it because our N.A.T.O. allies use handguns with the 9 x 19 round.

[Nov3]

In BALL ammo the 45 does have a substantial increase over 9mm. With modern +P+ hollow points the difference is negligible. Also the standard nato round is either 124 or 147 grain. Some 115 can be found in service. I am unaware of any 135 grain ball ammo but you seem well read on 9mm stopping power so perhaps you can shoot me a link? I am interested. BTW the top stopping round is the 357 with a mere 125 grain hollow point.

IMHO the main difference in stopping power between modern pistol cartridges is the user. The 9mm ranks a little lower because of all the poorly trained shots using it.

Also the Special Forces and others are using the 45 today.