I have target shot all my life and have not practiced extensivley for the situation of a home intruder, that being said I have only pointed a gun at another human being once in my life (and hopefully it stays that way)
to make a long story short what happened went down quickly and I had a very drunk maintence guy, that had no buisness being in my apartment let alone my bedroom @ 6:00 am with no knock or announcment, running from my apartment, I belive that the reason that I was
A) able to have a pistol trained on him immediately
B) didn't panick and squeeze of a shot
had everything to do with my familiarity with my weapon and nothing do with
practiced drills. I may be wrong but IMHO most of us will never be in a "fire fight" and familiarity with your weapon is everything.