I was trying to tune a bow this past weekend and was having trouble, both with the tuning and coming to terms with my results.
The bow is a sinew backed eastern red cedar selfbow, with a built up handle and cut away shelf.
It's 64" ntn, braced at about 7", I believe (not measured) it draws about 45-50# at 26" but I guess its possible its more. Shelf is cut roughly 3/16" from center (not quite centershot).
Anyway, I was shooting and trying to find a setup that shot well, I started with .500 spine carbons with tipe weight of 150grains. Tried everything from 220grains up fron to 100 grains up front.
The plain 30" .500 spine carbons with 100 grain tips seemed to shoot best, bareshaft seemed to confirm this. The arrow flight was laser straight.
Then I tried some wally world special .400 spine arrows with 125 grains up front (with vanes no less) and they also seemed to shoot really well.
The Stu Miller spine calculator have spine values of like 67lbs for the .500s and like 78# for the .400.
Is it possible that this is really the right setup or am I missing something?
Anyone had this experience?
On a side note, the CE Wolverine Hunter 5060 from walmart are cheap as anything, and with 125grains up front weight in at 495grains. Also the GoldTip insert weights will screw right in. I may have found a new go to arrow conidering the gold tips cost like 50% more. With those kinda grain weights its like they were made for trad, but without the specialty price tag.