My favorite drill is what we (ACT) call the "Henk Drill," which he used as the test for passing his course at the time I was in his class. He actually got the drill from John Farnam who used it as well (and still might), but the Farnam version has more restrictions (like no more than four shots fired without moving).
Target is either a playing card or a 3x5" index card (for rifle), glued to a backer target. All shots have to be inside the border of the target. Unlike other scoring systems, if it breaks the line, it misses (which is why I didn't pass the test in his carbine class).
Distance is 7 yards (I think) for pistol.
Par times varied by the type of class, but when I do it now, I just do it as quickly as I can without a timer. I think I did it in about 14 seconds when I passed it for Henk's handgun class.
Chamber is loaded. Magazine has six rounds plus a dummy placed in the magazine by someone else, but it can't be the top or bottom round. Spare magazine on belt is loaded.
At the start, move of off of the line of force until you you're on target, then shoot until your gun malfunctions (due to the dummy). While moving, correct the malfunctions with whack,rack,back (aka tap-rack-bang or tap-rack-resume).
When the malfunction is reduced, continue to engage the target until you run empty. While moving, reload, then engage the target with 3 more rounds.
Time stops on last shot fired if you use a timer, but shooter must scan afterward and can take about as much time as they want. After scan, reload, holster, drill over.
Drill takes 10 rounds, so you can do it five times with one box of ammo.
The distance was 10 yards.