RE: Are we overgunned? Was Jack O'Connor right?
Overgunned? I don't think there is any such thing. Unless you are using a gun the ruins more meat than it saves.
If you know how to use it, a 270 will work fine for anything on earth. But some folks want something more "suited" to the game they hunt. A magnum rifle just takes care of more variables if you know what I mean.
"Hey ya'll, watch this"