Doc,
...2 shot quick at center mass, not really aiming just pushing out and letting go. The goal being tight two shot group dead center.....
great tip.......one to really follow. Setting up and aiming is ideal, but probably not realistic in many cases......
Guardian, I agree it would be nice to always aim, and I also do the three shot drill slower, all aimed but as we all know, if the SHTF you ain't got that extra half second.
So I just pull the weapon, full push out locking my elbows and look at the center mass knowing from memory or hoping at least that those two will go where I'm looking.
I try for a 3-5" group.
Then for good measure in case the zombie is still moving forward I raise, sight and drop one in the nose!!
I try to do that each range trip.
It's one of three drills that might really apply to a real life scenario.