Chuck, IMO, the POI will move in the same direction as the cast or drop is moved; cast-on (move to the right) increase moves POI right and more drop moves (move down) POI down. Unless there is a handling/trigger pull issue, stock adjustments will not change differences between POI of the two barrels for a given POA. You can center the current spread in POI with stock adjustment. However, I'd strongly recomment that you deal with regulation first and then adjust the stock to a common, between the two barrels, POI. You can't know before hand where the common point is going to be. So, adjusting the stock to a central point does not assure that the regulated POI will be the central point. You could easily find yourself re-adjusting the stock all over again.
