At the close of my youtube videos I'm fond of saying "run your gun, not your mouth" despite the fact that I do both pretty frequently. I used to have a different name for this drill but I've taken to calling it the Run your Gun standards. Here's a video!
If you can't watch video at work, you need an NRA AP Repair center which has a 4 inch X-ring and an 8 inch 10 ring. You fire four strings of six shots each, one string at 10 yards, next at 15, then 20, and finally at 25. Par times are 6, 9, 12, and 15 seconds for each distance. The Run your Gun Standards is a pass/fail drill: to pass you have to shoot all 10s or Xs. You fail if you shoot any rounds outside the 8 inch ten ring. Simple as that!
Oh, pars are the same if you're shooting a red dot or an iron sight gun. A perfect score would be 240-24x, which I've never done.