Answer: To stop the threat.
The "to stop the threat" assertion works in three ways: On one hand it removes intent to kill from the equation, and on the other it serves to explain the round count, and it "frees up" tactical responses from a given box. The supporting arguments and evidence must add up, of course.
Why'd you shoot him once in the head? To stop the threat.
Why'd you shoot him three times in the chest? To stop the threat?
Why'd you, the four of you, shoot at him fifty times? To stop the threat.
And so on... Again, so long as the supporting arguments and evidence add up.
I agree, though, that the expected result of most shooting is death; expected as it what the shooter invisions as opposed to the likelihood of actual death.
No? Be honest with yourself.
That said, the statistics are handy in case someone tries to paint you as a death merchant.
Oh, I plan on shooting to stop the threat, be it one or how ever many rounds in whatever combination, from whatever guns are necessary.
If my I'd rather not shoot at all plan fails, of course.
Meriam Webster's: Main Entry: ci·vil·ian Pronunciation: \sə-ˈvil-yən also -ˈvi-yən\, Function: noun, Date: 14th century, 1: a specialist in Roman or modern civil law, 2 a: one not on active duty in the armed services or not on a police or firefighting force b: outsider 1, — civilian adjective