ORIGINAL: younggun308
Funny thing is, Federal's site doesn't have .45 ACP, it has .45 Auto.
Same for the Winchester site.
I think that's weird.
So, .40 S&W has higher velocities than the .45 Auto, in every comparison I did. SO I guess the .40 S&W would have more advantages.
What kind of advantage does the .45 ACP have? Is the ammo cheaper?
ACP(Automatic Colt Pistol)and Auto are the same thing. In fact on the slide of my Glock 21 it says .45 Auto. It is more of a personal choice on the two cartridges as they are so close in performance. I carrya Beretta 96(.40 S&W) daily as my duty weapon. When I am off duty, I carry a Glock 23(.40 S&W) or a Glock 21(.45 ACP). I don't feel undergunned with either pistol. Did you look at the Double Tap site? If not, look around there and you will see how close these two really are.
http://www.doubletapammo.com/php/catalog/index.php