In my experience with wood arrows, which is pretty much all I’ve ever shot until a couple of years ago when I started playing with some carbons, no two pieces of wood bend the same. They may spine really close but where they bend, how the they do their harmonics, they’re all are individuals. The grain runs different in each shaft so they can never truly totally match. Close sometimes but never exact, close to exact anyway, like carbon or aluminum.
I tried bare shafting woodies once. Figured out then why feathers are way important.
Probably clear as mud what I say but my 2¢.
Generally with wood we’ve always used heavier or lighter points to match spine. At 20 yds. and under the difference of point of impact between a 125 gr. and 145 gr. or a 145-160 is no problem for hunting conditions.