I would just like to see how one can factually explain the difference between three shot groups shot three times at different targets and one ten shot group at the SAME target, but allowing cooling time between each three shot session
Let me give it a whirl by asking you to conduct an experiment next time you shoot. Take three identical targets, each with a three-shot group and all with the same aiming point. Take the average group size of those three.
Next, lay those targets on top of each other so that all nine holes (I'll spot you the tenth) can be seen. You might have to use one target as a base and then lay each of the others on it individually and mark the hole locations on the base target with a sharpie. Now measure that group size and see how it compares with your first average. I bet there's a significant difference.
