Shot placement maximizes the useful power of the weapon. If it does not have enough power to penitrate to the vitals nor the destructiveness to damage the organs where the shot was placed, then placement is moot.
You need a combnation of good shot placment and adaquate power. Just what that combination is is what's up for debate.
"The government has confiscated all of our rights and is selling them back to us in the form of permits."