The "shot placement is king" thing is so over done. Why every LEA teaches COM hits, because the avg shooter can deliver true accuracy in a combat situation. A 22lr in the heart is likely fatal but the guy can kill you long before he dies. So we use bigger calibers & multiple hits to stop an attack sooner than later. The bad guy needs one lucky shot to your CNS for you to lose the fight, just one. Bigger guys have lots of nonvital area to put bullets into, so having more before a reload is always better than having less.

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NRA Cert. Inst. IDPA CSO