It is somewhat difficult to bare shaft tune wood arrows, because of weight/spine differences from shaft to shaft. I suppose you could take one from the middle of your weight/spine range and tune that one, or pick two from the ends of the range and split the difference. I have known a number of experienced wood arrow makers who won't bare shaft tune because of the inconsistencies, and simply pick an arrow to match your bow based on their vast experience with wood arrows. They are usually spot on.