For those that think they can stop someone in their tracks

Expect nothing. It is well documented that people can be shot through vital organs, such as the heart, and still be mobile for 20 to 40 seconds — what has been called “ambulation after death” — causing havoc and death before they finally succumb. The human organism might not be hard to kill, but it is certainly hard to stop quickly.
http://paladinplanet.blogspot.com/2011/11/expect-nothing.html