With my GT Traditionals , 29 1/4 inch shaft and 175 grains up front, I think I'm around 9.3 grains per lb.
I dont really worry about it as long as my bow is quiet and they are flying good.
I have some 2016 aluminum, 29 1/2 inches with 125 grain head they fly good. I remember in the 70s we could buy Bear ,TRue Flight, or Ben Pearson wood arrows in the store, or aluminum.
I used both for years. I always favored tapered wood shafts that were of good quality.
My son gave me these GY 600s. I am pleased with them so far.
I dont think you can beat the forgiveness of good wood taperd shafts, but the GT 600s are close.