I try my b/s tests at 10yd increments (10, 20, 30, 40yds) to get a better picture of what' s going on before adjusting something. To me, it seems that without checking a variety of distances you may miss some indicating information.

If the b/s is not consistently hitting the same area (sometimes b/s left of fletched group, sometimes right) at a given distance, then yes, I would think that torqueing the riser could be the culprit. The b/s should be fairly repeatable in placement.

I can' t speak for others, but I use b/s test for obtaining better flight from broadheads and much closer grouping of broadhead impact vs field point impact. I don' t use b/s test for my target bows. Once again- that' s just the way I do things so take it for what it' s worth. For target bows I group tune at different ranges to find the optimum adjustments in poundage, spine, centershot, etc., that will yield the best results.