We have had discussions of shotgun vs handgun vs rifle and rounds. Well here someone actually shots a bunch of different rounds at sheet rock and other stuff. What I learned is that no matter what round I use, it will penetrate more walls than we have generally between living areas, so I might as well use something that is going to knock the bejeebers out of my intended target.
http://theboxotruth.com/main.htm
http://theboxotruth.com/main.htm