[cavtrooper21]

Here's the deal (at least for me)...
I have SEEN, with me own little peepers, a man wearing body armor get hit in the upper torso by a .45ACP (turned out later it was a COR-BON "+P")
It flattened him. Bam, on the ground, stunned and groaning.
I have also seen on more than a few "demos" and live shooting vidios what happens to you when you take a 9mm in about the same spot. You stay standing and go "OOOOWWWWW!!!" real loud, then (a least in one vid I saw) unload on the bad guy.

I'll stay with my trusty suped up Norinco clone.
357 = 9mm no matter what you do with the case volume.

[SauronOfMordor]

357 = 9mm no matter what you do with the case volume.

By that logic, there is no difference in stopping power between .22LR and .223

9mm +P+ has a muzzle energy of about 400 foot/lbs, while .357 SIG (more powder, higher velocity) is 490 ft/lbs, and .357 magnum (which has better on-the-street stopping stats than either 9mm or .45) is 524 ft/lbs

Stopping power comes from energy expended to disrupt the functioning of the target

[USMCBOMBGUY]

The 357 SIG (read 357Mag) shares no traits with the 9mm. I understand the loyalty with the 45, I love mine, but its like that old pickup, good in its day but now we have things like computers and advanced technology that makes thing function better and more efficiently. Neither 9mm or the 45 are worth a crap when talking body armor, true the 45 may have more knockdown, but the 9mm has more velocity. I also know that if someone is wearing armor and I have the chance I will take them in the head at as great a distance as I can, and that will be a good bit farther then it would be with the 45.