POC for 28-32"

[Billy]

If I build a pair of bows....

each would be 68-72" bamboo backed hickory, 35@28, almost center cut  (open to thoughts on length)

one guy draws 28" the other 32"

hoping to build each a half dozen arrows to go with the bow.

I'm open to spine suggestions, as well as field tip weight. Both bows will be for target shooting.

[Bjorn]

Length of the bow has little effect on spine. What kind of string material are you going to use?
Will the bow with the longer draw be 35@28? Or 35@32? Biiig difference there. Are the bows straight limbed or R/D? How close to center cut?
I'm ready to suggest spines; but need to know the answers first.

[Billy]

Both bows will be 35 @ 28.

Straight limbed.

A hair less than center cut.

I deal with 26" draw or less usually but, I'm willing to learn...Thanks for any input.

[Bjorn]

Assuming the strings are dacron and that window is really going to be cut that close to center, bow one (28") will need arrows 35-40# with 125 grain points and cut to 29" BOP.
Bow 2 will be producing 45-48# at that draw and with Hickory I would make it as long as practical-70".
POC will be tough to get at 33". Maybe Fir from Surewood. I'd go with 60-65# for that long a shaft and a 45-48# pull.
Add 5# for a "modern string material" like D97.
You might double check with the guys in the Bowyer's Bench section.

[Billy]

Thanks Bjorn!
I'll check the Surewood stuff.
I think they will both require shorter shafts, they are measuring their draw for the machines they shoot now. But, I have a starting point.
Yes, on the dacron and center cut.

[Orion]

You're right, Billy.  If they're shooting machines now, they'll drop down at least an inch, maybe two when they switch to a straight gripped longbow.