I think there must be many determining factors, as to how many shots
it takes to put down a perp. Number of assailants, range and location of
a possible attack, cover, avenues of escape, etc. all have to be of some
consideration. Its long been maintained, that attacks usually occur within
a 21 foot radius of the potential victim. At that distance, even if attacked
by a knife wielding thug; you are more than likely going to get stuck or
worst, cut. Whether your brain can react, and send a signal that this
threat is real and needs to be dealt with using deadly physical force
differs from person to person. Persons who train on a regular basis
probably could end the threat with three shots or less; but in todays
society, the untrained licensed CCW civilians might require many more
shots with a reload in between~?