03-15-2010, 04:16 PM
Both the .45ACP and 9mm NATO generate enough force to induce hydrostatic shock, which is a large part of the real stopping power behind a bullet anyway, so hitting someone center mass with either weapon is going to stop them fairly well. The .45ACP is subsonic though, and despite the larger bullet it generates less force than the 9mm NATO, so may not fare as well against body armor.
The comparison therefore probably moves to other factors - Reliability, fire rate, cost, etc. I don't really know much about either of those handguns in those areas, but I would expect the clip magazine for the Baretta holds more ammunition than the one for the Colt.
The comparison therefore probably moves to other factors - Reliability, fire rate, cost, etc. I don't really know much about either of those handguns in those areas, but I would expect the clip magazine for the Baretta holds more ammunition than the one for the Colt.