Looking good my friend. I would cut the feathers off a couple of those shafts and see if they shoot into the group. That's the only real way to know if the spine is right or bow is tuned to those shafts. Just remember that any inconsistencies in form or release will send a bare shaft way off.If however form and release are correct a bare shaft if spined correctly to the bow will fly just as good as a fletched shaft.