let's talk about accuracy

[ballisticboy]

To start with you are not actually talking about accuracy here. Group size is a measure of dispersion, not accuracy, and the two are not the same. By definition (not my definition but the internationally agreed definition) accuracy is the distance of the group centre from the aim point, not the group size. The two are defined differently to distinguish between the effects of deterministic errors ( range errors, average wind speed errors, aiming errors etc.) and non deterministic errors (pellet yaw, muzzle velocity error, wind variability etc.), the latter largly determining group size and the former determining accuracy.
For hunting you need a combination of accuracy and small dispersion to produce precision and a high degree of first round effectiveness. A 5p group of 10 pellets around the aimpoint, fired under all conditions at 30 yards, or any other unknown range, is perfectly acceptable if it can be repeated on three different occasions under different atmospheric conditions.