I was able to select a very straight grain cedar brd. and made up a couple 11/32" shafts with my router jig. The shafts alone came out at 340 grains at 31". (my DL is 30") According to my spine tester, they came out at 55#, which is what I needed. I also made up a couple from poplar and they weighed around 460 grains with a spine of 62#.
I shot the 4 arrows with 125 grain field pts. and 5" feathers yesterday and they all hit very close with good impact at 18 yards.
This was an experiment. I was curious, since POC comes from the West coast and this cedar is also West coast, give it a try.