Bareshaft tuning is just that. You shoot bareshafts (no fletching) with fletched arrows.

Adjust your rest or nock accordingly till the two impact together.

To be honest, papertuning, bareshaft tuning and walk back tuning etc, are all a waste of time if you need to tune BH's.
They are best for 3D archery, etc...

Just start with eyeballed settings, and shoot BHs and FPs and adjust until they hit together. Thats all you need to do. Anything else is overkill. If BHs hit low, adjust your rest up a hair, if bhs hit right, move your rest left a hair. Keep doing this, and eventually you will have them hitting together or darn near close.

Have a good one---Matt