Don't worry about overall weight until you are building for a specific point on distance. Shoot 31 Inch 500s with 175 grain points or 600s with 125 grain s. The manufacturers spine charts are all wrong for finger shooters.

 

Okay I can get behind the idea of not worrying too much about spine as long as it's not too far off the recommendation. But ignoring overall weight I don't think I could do, as the bow is warrantied for a year and wasn't exactly cheap, I've read if I use too light an arrow the chances of the Siyah breaking go up and would be the tell-tale sign that I was using under-weight arrows.

So looking at something like this, just because it's a tab I happen to have open right now, despite it being carbon and not my preferred aluminum..

12pcs Linkboy Archery Carbon Arrow Bamboo Skin Shafts Spine300 400 50

10330667657222168 12pcs Linkboy Archery Carbon Arrow Bamboo Skin Shafts Spine300 400 500 600 ID6.2mm 4'' Turkey Vane Traditional Bow Shooting

linkboyarchery.myshopify.com

If I went with 500 and 175 grain point @ 31" I'd get a total of 401.61 grains.
If I went with 600 and 125 grain point @ 31" I'd get a total of 319 grains.

That first suggestion would put me close to the minimum at least, the second one is 86 grains off, which seems much too light? Again I'm open to learning, this is all new to me, but did I do the math right there and you're just suggesting a very light arrow and ignoring the warrantied min GPP?

 

Never heard of those brand of arrows. The only ones that I can get under 8 grains per pound of finished arrow weight are expensive target arrows like victory vaps. Get easton or black eagle traditional carbons or easton gamegetter xx75. They will finish out between 9 and 11 grains per pound.

Spine tuning is more important than weight if you want accuracy.

 

You forgot to include fletching, insert and nock in your weight.

 

seems a lot of these online stores don't list the weight for the fletching and nock, the insert is sometimes listed but not often, is it kind of a standard range for these things? im sure if i bought a bare shaft and bought all the components separate i could get accurate weights but buying pre-fletched arrows with an insert and nock i just assumed the weight listed was including those things.

 

... have you considered shooting a heavy wood arrow?...

 

40 grains for estimation with feathers, nock and insert.

 

ah that's super useful thank you, that definitely makes it easier to fall within min GPP

 

Something like a .500 @ 31", 200 total weight up front, feathers, nock, is going to be somewhere around 480 grains total. The other option is aluminum arrows; more weight per inch than carbon

 

So all these sites saying I need a 400 spine are wrong? I know it's more complicated than that but those charts really confused me.

Looking at aluminum I'd think a 30inch 2016 would work well. 318grain at 30inch + 40 fletch insert nock, takes it to 358, add a 100grain field point and I'm at 458, or just over 10gpp which I've read is the ideal?

 

Spine charts are either written by lawyers or mechanical release shooters. Easton used to have good ones a long time ago, but they are not anymore. 2016 is 500 spine and will need way more point weight to fly straight. 1916 if you want 100 or 125 grains.

 

Shooting the Stickbow - Aluminum Arrow Guide

Shooting the Stickbow, 3rd Edition by Anthony (Viper) Camera presents a clear and comprehensive approach to learning and mastering the art of Archery.

www.shootingthestickbow.com

 

Yeah I just found that site earlier today actually, it really simplifies things. I have seen a lot of people mention 1916 for 45#, but based on that page it says 1916 would work for 45#.. if the arrow were 28" long (IN GENERAL for 28" ARROWS +/- 1" (27 - 29") and 100 - 125gr heads). My draw length is 28.5 so I'd want to go up to at least a 30" arrow, and that page says jumping to 30" long arrow I should jump to the next stiffer spine which would be 2016.

 

xprs, when you say a tarter bow, are you shooting off the knuckle with a bow-glove?, or is there a shelf on this bow?

 

yes off my hand with a glove

 

1916 arrows weigh 10 grains per inch.

 

hello with my 44# pounds longbow i use gamegetter eastonn xx75, not expensive.
i use spine 500 10.8 gr per inch and spine 400 12 gr per inch
cut at 28 " normal insert ( 10 /12 gr), 150 grains point on the 500 spine 175 gr point on the 400 spine. it work .
may be if you want a 30" schaft you have to use 100 grains for 500 spine and 125 for 400 spine.
i find that gamegetter schaft are more weak for the same spine than others type of schaft .
gamegetter and alluminium schaft are very good for robin hood shot, this schaft fit well together to keep for souvenir your robin hood shot
you will be more than 9 gr per pound it's better for your garanty

 

Sorry for the late reply, got busy with life, your comment was helpful, it's nice to hear those shooting well for you.

45# @ 28" traditional horsebow shot off the hand (no center cut), draw length of 28.5"
Right now I have easton gamegetters, 2016 (500) @ 31" and 2117 (400) @ 30"
Going to try 125 field point on the 2016s and 145 field point on the 2117.
It brings me to decent GPPs of 11 and 12.5 respectively.
Only concern is that 3rivers dynamic spine calculator is telling me I should be using a 225grain field point on my 2117s.


Waiting for the snow to melt so I can try them out.

 

The 3 rivers calculator sounds about right. If you can't tell a difference don't worry about it