have any of you went to match an arrow to a selfbow only to find any point weight will fly perfect??   I have an osage character bow made by a popular bowyer its 46# and I found it likes 55/60 spine arrows which seems unusual but thats fine,,,  but then I'm onto the heads and low and behold it will shoot a 125, 145, 160, 190, 200, 230gr heads perfect they all hit in the same 18yrd group and I'm drawing, holding and looking at the same spot.. 

I'm trying to decide the 190's are ribteks and the 200's are abowyer whitetails LW bevel that are very wide and are known to Hiss in flight but totally silent from a slow selfbow.   

the Rhode Island deer season is very close 

I've never noticed it before but I usually only shoot 125 commercial heads on dowel type shafts. I do shoot cane of hardwood shoot arrows and because of their natural taper that they can shoot well from bows with different draw weights from 45# to about 60#. Maybe it's the less speed of the selfbow that allows for the difference. Just a guess.

Forgot to mention these woodies are parallel but pretty cool

it is very unusual to find everything groups together. I would suggest testing with a white weighted string hanging in front of your target butt.  Line up your arrow with the string at 10 yds and see where they group, or don't group. Then take the best and try paper tuning, and see if any tears occur where the arrow passed through.
The paper test can be at 5 - 10 yds  with field points. Broadheads will cut through and void a paper test.

If i get a chance i can try paper but im kinda old school where i tube for broad head flight and leave it there. So today i shot all broadheads again forget that abowyer that's definitely out,, the ribtek hit perfect but 3" lower than the others at 18yds.   Im going to shoot the 160's they seemed to be really consistent the same as the 125's and 145's but i have a ton of 160 broadheads.