I am tuning some shafts and the fly nock left at 20yrds but straighten out and go in the target straight. Is this right?
They sound good-how does the grouping compare to your fletched shafts?
All together
If they are grouping with your fletched shafts then you are good to go. From what I understand (and this is from O.L. Adcock) even if they are not hitting the target perfectly straight but are grouping with your fletched shafts then you are tuned correctly. This is how I have always tuned my shafts and it works for me.
What you are probably seeing is the arrow going thu/coming out of parradox. If they are grouping with your fletched shafts you are good.