@Sheepdog556 We used to do a drill that was designed to induce stress both for physical activity as well as competition.
I doubt you could do it on an indoor range and mebby not even on an out door range depending on the rules.
It was basically a magazine or in our case a single round (rifle) placed at 5 foot (or yard) intervals as far back as you felt like going. In this case (pistol) 1 round in a mag and two rounds in the second mag. Fire the first round, slide locks back, reload and fire one round, safety and holster. Then turn and run back to the first mag, pick it up and put it in the #1 reload spot and run back to the line. Fire, Reload and fire. Safety and holster. Each pickup mag had two rounds in it. When you got really hard you induced 10 pushups or 5 eight count body builders.
Fast was fine. Accuracy was final. In our case there was a time cut off so those of us smart enough (old enough) to game the system could not walk we had to at least “trot”.