adams

I also think a robinhood could be shot out of an untuned bow. Basically a robinhood just means the POI (point of impact) happens to be the same. If shot from an untuned bow at the same distance (assuming same form and anchors are being used) the arrow flight should be relatively the same, making a robinhood no more or less likely then if shot from a well tuned bow.

I do think it is very unlikely that this could be done with arrows shot from 2 diffrent distance.