The Bill Drill is one of the simplest ways to measure a fast, controlled string: draw and put six shots into one target as quickly as you can while keeping the hits good. It ties together the draw, the first shot and the ability to keep the sights tracking, which is why it shows up so often once the four basic elements start coming together.
Concept
Bill Drill
A classic speed drill: six shots into a single target as fast as you can while keeping every hit acceptable, used to build and test a fast draw and recoil control.