If you don't mind me asking, why the focus on just that one particular article? (Can't remember if I even read it, myself, nor am I familiar with the name.)
There's no shortage of articles written about this subject by people working in the LE field, though.
One-Shot Drops
Surviving the Myth
By ANTHONY J. PINIZZOTTO, Ph.D., HARRY A. KERN,
M.Ed., and EDWARD F. DAVIS, M.S.
http://www.rrmemphis.com/myth.pdf
An Alternate Look at Handgun Stopping Power by Greg Ellifritz
- See more at:
http://www.buckeyefirearms.org/node/7866#sthash.HzsAWCiT.dpuf
In the second linked article above, the author makes some unsurprising observations at the end (Conclusion section), such as ...
The results I got from the study lead me to believe that there really isn't that much difference between most defensive handgun rounds and calibers.
and ...
Folks, carry what you want. Caliber really isn't all that important.
I've been a LE firearms instructor since 1990, and I stopped favoring any particular caliber for any sort of "one shot stop" effect a long time ago. Such articles don't hold a particular interest to me anymore. I'm more interested in user mindset, skillset, training practices, knowledge of tactics, weapon maintenance, etc.
There aren't even any guarantees when it comes to achieving consistent "one shot stops" using rifles or shotguns, let alone handguns.
Always makes for long discussions and debates among the public internet firearms enthusiasts forums, though.
