[bowman extreme]

Is there ANY arrow chart that is worthwhile (or even in existence) for high F.O.C. shooters?
I can remember when 150 wasnt even on the charts. Today it is (but) 150 isnt even a heavy head.
Is there somewhere I can go (for reference) to find shaft spine as can be related to head weight for any/all manufactures shafts?

Someone must have done the work.
Right?

 

[bowman extreme]

ttt

 

[westender]

Not a chart but . . the software programs like Pinwheel SFAX and the others probably let you add whatever front weight you want and automatically calculate spine and foc for you.

 

[The Phantom]

Try this.

Click on "Open Spine Calculator"
Fill in the appropriate info.


https://www.victoryarchery.com/arrow-guide/

 

[azscorpion]

http://backcountrybowhunting.com/calculator/

 

[The Phantom]

I don't see a spine calculator at that link.

http://backcountrybowhunting.com/calculator/

 

[pottergreg]

For every 25 grains of point/insert weight or 1 inch of shaft length it will be equal to 5 pounds, so move one box weaker on the charts for every 25 grains in point/insert weight added.

 

[KyleD88]

I think you're close Pottergreg or might be dead on, but according to Pinwheel its closer to
25gr is about 3# of draw weight. Can someone else verify what it is?

I just ran a setup for a guy that was:
Hoyt Spyder Turbo at 62 pounds, 28" draw. Arrows are Black Eagle Rampage 350's at 27" long. 100gr tips, 146gr insert weight and 3 fletch blazers

So in his case:
Adding 146 grs over the 100 gr, which is shown on most arrow charts (146/25= ~6)
For the charts that's roughly like shooting 18# over your 62# (6*3= 18)
So you can go to the chart and look up 70# @ 28" (62+18=70#)

Which would put him at a 300 spine and that verifies

 

[KyleD88]

Make that 80# lol