Right arrow spline.

[B-Ridge Sledder]

Halon 6 70#
27.5 draw
26” arrow
100 grain heads
Have Easton fmj 340 with 75 gr brass
Local shop says I’m over splined
Struggling to paper tune it.



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[X-file]

According to the Easton chart you have the arrow you should. Halon is 345 ibo so you add 5# to dw. Total tip weight with insert is 175 Gn so you add 6-9# of dw. This puts you in the 340 spine range. What is the tuning issue?

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[B-Ridge Sledder]

I’m no expert but mechanicals and field points fly great. Trying to switch to fix blades and am struggling. Exodus is what I have currently.


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[X-file]

What fix blades are you trying to tune?
Can you post a pic of what the tune looks like through paper?
Is it possible the inserts aren’t 100% trued? If that’s the case then the broad head could be slightly off centered so to speak but you wouldn’t see that in the field point flight.


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[B-Ridge Sledder]

That makes since it’s snowing here so won’t be today. I’ll look into it


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[MTSabo]

Your under spine which would make broadheads fly worse.

 

[MTSabo]

You would be right in the sweet spot for fixed blades with a 20 gr insert

 

[MTSabo]

 

[jmez]

Those arrows are fine out of your set up. You need to tune your bow.

 

[Sorry slinger]

Your under spine which would make broadheads fly worse.



View attachment 96003

Any chance you can run this for me? Halon 32 6. 70 lb. 28 inch draw. Currently running beman ics classic hunter. 300 spine. 100 grain brass inserts 100 grain point 28 inch arrows. 4fletch with 3” bohning xvanes

 

[MTSabo]

Any chance you can run this for me? Halon 32 6. 70 lb. 28 inch draw. Currently running beman ics classic hunter. 300 spine. 100 grain brass inserts 100 grain point 28 inch arrows. 4fletch with 3” bohning xvanes

Sure. hope the OP dosent mind

 

[MTSabo]

1/2" off the shaft would bring it in to center of the green

 

[Muley15]

You just need to Broadhead tune

 

[Don Qui Puncher]

Yup sounds like you need to walk back then broadhead tune

 

[Onetrakryder]

Hey OP just a quick comment. Short shaft is stiff to begin with. Chart showed you were border line to start. Consider going with 100gr brass up front to help soften that shaft up a bit. Cheaper than new arrows. As others have stated walk back tuning might get you where you want to be. Paper is my preferred method as well but in the end you’ll get where you want grouping with walk back and broadheads tuning.

 

[2Stamp]

Hey OP just a quick comment. Short shaft is stiff to begin with. Chart showed you were border line to start. Consider going with 100gr brass up front to help soften that shaft up a bit. Cheaper than new arrows. As others have stated walk back tuning might get you where you want to be. Paper is my preferred method as well but in the end you’ll get where you want grouping with walk back and broadheads tuning.

Heaviest he can go with FMJs is 75 gr brass. It's the HIT insert. Adding a little wt to the back will also weaken it a little. He can try a wrap if not already using one. it's another 5-7 grs depending on how long. Not alot.

 

[Onetrakryder]

Absolutely correct on the HIT insert. Always preferred adding weight up front to keep good FOC. Could still try 125 gr tips/ heads if preferred broadheads is available in 125 gr. The tips are also cheap and will let you know where you are if you don’t want to shell out for new arrows.

 

[87TT]

This has my head spinning. Starting to wonder if I got it right now. I have Gold tip hunter pro 300, 70# 29 1/2 draw 125 gr head with 50 gr insert on a 30 1/2 arrow. Thought it was the right spine but now not sure anymore.

 

[nphunter]

This has my head spinning. Starting to wonder if I got it right now. I have Gold tip hunter pro 300, 70# 29 1/2 draw 125 gr head with 50 gr insert on a 30 1/2 arrow. Thought it was the right spine but now not sure anymore.

If your shooting it at full draw weight your under spined depending on what’s on the rear. Doesn’t mean it won’t shoot awesome, if you have issues you can’t resolve you can switch to a 100gr head and if your groups tighten then you’ll know your spine was too weak with the 125gr head.

 

[nphunter]

Halon 6 70#
27.5 draw
26” arrow
100 grain heads
Have Easton fmj 340 with 75 gr brass
Local shop says I’m over splined
Struggling to paper tune it.



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Those arrows are fine, spine isn’t your issue. The Exodus is a temperamental head because it’s a large cut heat and has a lot of surface are. Like others said, buy a squaring device, 99% of shops don’t actually square Easton arrows like they are suppose to be squared. The HIT is an awesome system but even the best arrow saw made won’t cut the shafts perfect. Go buy or borrow a G5 ASD, take a pencil and mark the entire end of the shaft with lead and then start squaring. You will be able to see how out of square the shaft is after a couple turns. Keep going until all the lead is gone.

After squaring try shooting again and if you still have issues try a different head, if you shoot something else better than switch.

FYI

I have never seen 1 arrow out of hundreds I’ve squared come out square from even the most expensive commercial arrow saw. They always have to be squared and if your planning on continuing to shoot HIT’s you will be way ahead to buy a square!!