Hey fellas,
Was taking a break from some recent NA bows, and ran across my chart from the U.S. Forest Service. I must have read that list too many times to count, but this time I noticed the numbers for Yellow Birch....Holy Cow!!!
I had 2 staves and 3 "boards" that I cut and milled a few years ago and just never got around to working till now. The 5 bows range from 48 inches to 59 inches with draw lengths from 25" to 29" and weights from 44# up to 56/57#. All the bows are rectangular section, bend through the handle bows. 1 bow is straight single curve (w/ flipped tips) the other 4 are 5curves with varying amounts of initial set-back and tip-flip.
This wood is really something, and I dont know why it isn't used more often. There are 4 full draw pics, the bows on the rack (while building) and a chart from the numbers given by the Forest service. I included the regular bow woods they had listed for comparative purposes so you can see how the Birch compares head-to-head.
I'm sorry there is no listing for Osage or Hop-Hornbeam as this list covers "economically important commercial woods" but there is enough to give you a good idea like I said.
Hope you find the info useful, and if any other pics needed please let me know.
NOTE: The only "problem" I have run into is the way the Birch accepts stains.
rich