Bill Drill
The "Bill Drill", coined by Bill Wilson, is a drill with many different variations. These were all done from 8 yds and range in time from 1.73 to 1.87 seconds. Split times range from 0.14 to 0.16 seconds.
(While this drill is meant to be a six-shot exercise, yes, one iteration I mistakenly stopped at five. Oops.) 😛