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If you're like Phillipo and you already know the grouping is 0.75 MOA then you can adjust pretty quickly to get the gun sighted in within 0.75 MOA by firing one shot at a time.

The theory is that the population of all possible shots has a mean value and each shot has a random deviation from that location.

You try to estimate the location of that mean point of impact...

A big group well centered is better than a "potential bug hole" with random mpi .

If that's really the case (can Never be too sure with Phillipo-could be a double pxxxtake) Then its not too bad. Just shows the fallacy of adjusting on few Shots.

We've all seen a lot worse than...