But when performance becomes a part of our armed citizen life style, and adrenaline is affecting that 2" or 3" grouping that we have at the range at 10ft, what would you wish you had?
I'd say more time with your gun. My groups are smaller than that at 7 yards.
Only when I open it to 20 yards do they get that large, or at rapid-fire. Beyond 20 yards will be a problem proving self-defense in court, most likely even beyond 10. And it's self-defense for me, as to why I carry. Of course, YMMV.