Rick, thank you very much for posting that picture. It's a lot better than the one I put up.
Jim, the nock being perpendicular to the grain is not in question. That's well documented.
What we're wondering about is how the grain run out rifts point, as per the picture R. Combs put up.
Is it necessary for them to be on top of the shaft pointing to the tip of the arrow?
Is it an archery legend to orient them that way?
We've all heard it should be done that way, but does practical evidence show arrows breaking in a manner that the rifts matter?
So far it's looking like an archery legend. Especially with how 4 fletch arrows are nocked, they could go either way (!).
I know I'll keep making arrows this way for the sake of uniformity, if nothing else.
Guy