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underspined?
82nd airborn, set on 68 lbs, arrows are 28.5", and draw is 30". No matter what I do, my broadheads hit 3 - 4" right of my field points. This leads me to beleive I'm underspined. The arrows are carbon express terminator lite select 60/75's. Can anyone recommend me an arrow approx the same overall weight? (400 grains ish)
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RE: underspined?
ORIGINAL: JoshKeller 82nd airborn, set on 68 lbs, arrows are 28.5", and draw is 30". No matter what I do, my broadheads hit 3 - 4" right of my field points. This leads me to beleive I'm underspined. The arrows are carbon express terminator lite select 60/75's. Can anyone recommend me an arrow approx the same overall weight? (400 grains ish) |
RE: underspined?
I myself do not think you are underspined, but I do believe you need to move your rest to the riser 1/8" or so.
And if you are using blazers, try rotating thier orientation to make sure you don't have clearance issues. Have you tried shooting bareshafts and see where they hit compared to fletched? |
RE: underspined?
I agree with BC on this one.
The terminator lites are .342 spined. With your DL and arrow length you are right about there.....mabye just a hair on the weak side but nothing to write home about. I would try walkback tuning to get your rest position set correctly for your broadheads. |
RE: underspined?
Update. Shot a bare shaft and it too went 4" right of my field points, and moving the rest to the left and right didnt close the gap any. Turning the bolts out two turns did close the gap. I'm in need of new arrows anyways, as I only have5 left, sowhen I get new ones, I'd prefer to at least have the option of maxing down my bow and still getting good flight. I do have an elk hunt planned in the fall.I'd much prefer to shoot it at 68 lbs, its where I feel most comfortable.
So I would assume I need to go to a .300 spine? How are the blackhawk vaper pro shafts? Or would I be better off going to a gold tip 75/95? Any recommendations? |
RE: underspined?
ORIGINAL: JoshKeller Update. Shot a bare shaft and it too went 4" right of my field points, and moving the rest to the left and right didnt close the gap any. Turning the bolts out two turns did close the gap. I'm in need of new arrows anyways, as I only have5 left, sowhen I get new ones, I'd prefer to at least have the option of maxing down my bow and still getting good flight. I do have an elk hunt planned in the fall.I'd much prefer to shoot it at 68 lbs, its where I feel most comfortable. So I would assume I need to go to a .300 spine? How are the blackhawk vaper pro shafts? Or would I be better off going to a gold tip 75/95? Any recommendations? |
RE: underspined?
After running numbers on the 82nd for blackstick,you are probably way underspined.;)
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RE: underspined?
I know the numbers on the shaft say 7595, but unless one of the other guys correct me I would not recommend them. I've never gotten real technical with them but everything I've read says the 7595 is a 340 spine, which is basically what you are now shooting. Even GT's website lists them as a .340 spine.
Maybe TFox can run the numbers. In the Gold Tip line you can shoot the Ultralite 300 or the 22 series shafts, which are also a 300 spine. Both are light weight, so this might not suit your application. There are other ways of increasing the arrows' weight though. Another option GT has, if you're interested is their CAA shaft (carbon aluminum arrow). These are real close in specs and quality to Easton ACC's without the heavy price tag. Might be a good balance between speed and weight for penetration. Just out of curiosity, when you dropped the weight on the bow just how much closer were the bare shafts hitting to field points? |
RE: underspined?
A Carbon Tech Whitetail XP65/80 is a .300 spine, 9.5 gr per inchand a very, very good arrow. Consistant spine and straightness across the dozen. I cut these arrows to 30" and have no wobble.
http://www.carbontecharrows.com/ http://www.lancasterarchery.com/product_info.php?cPath=38_79_65_86&products_id =1571 |
RE: underspined?
I am showing you to need about a .290 spine at that arrow length and draw weight.Provided you are achieving optimal performance which I would bet you are close to.
I would drop a couple #'s and shoot a 300 shaft. I agree with BG completely. |
RE: underspined?
Tfox, I dont know what program you are running but your numbers are way off. The arrows he is shooting are fine spine wise. The 290 spine would be severely overspined. Here is what OT2 showed for his setup
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RE: underspined?
I used to use that program for a little while,but found it to be less than accurate.
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RE: underspined?
ORIGINAL: BGfisher I know the numbers on the shaft say 7595, but unless one of the other guys correct me I would not recommend them. I've never gotten real technical with them but everything I've read says the 7595 is a 340 spine, which is basically what you are now shooting. Even GT's website lists them as a .340 spine. Maybe TFox can run the numbers. In the Gold Tip line you can shoot the Ultralite 300 or the 22 series shafts, which are also a 300 spine. Both are light weight, so this might not suit your application. There are other ways of increasing the arrows' weight though. Another option GT has, if you're interested is their CAA shaft (carbon aluminum arrow). These are real close in specs and quality to Easton ACC's without the heavy price tag. Might be a good balance between speed and weight for penetration. Just out of curiosity, when you dropped the weight on the bow just how much closer were the bare shafts hitting to field points? dropping it down to 60 lbs, the closest I could get them was about 1" apart at 20 yards. anyone have any experience in these? I assume the 300 size would be the .300 spine I'm looking for? http://keystonecountrystore.com/Arch...B208__300.html |
RE: underspined?
Plus,his results are showing weak as well.;)
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RE: underspined?
At 60,I have you just on the weak side of the green.;)
I am also assuming you are shooting a 28" raw shaft.That would put it about 28 1/2" to the nock groove. Archer,you need to add a 1" overdraw for most applications.Most rest today have the arrow set back 1". |
RE: underspined?
If possible, could you run my options with a 29" raw shaft? I'd like to keep the broadhead in front of the shelf.
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RE: underspined?
If you want to stay with the 68#'s,then the Gold Tip big game 100+
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RE: underspined?
ORIGINAL: brucelanthier A Carbon Tech Whitetail XP65/80 is a .300 spine, 9.5 gr per inchand a very, very good arrow. Consistant spine and straightness across the dozen. I cut these arrows to 30" and have no wobble. http://www.carbontecharrows.com/ http://www.lancasterarchery.com/product_info.php?cPath=38_79_65_86&products_id =1571 |
RE: underspined?
ORIGINAL: TFOX I used to use that program for a little while,but found it to be less than accurate. |
RE: underspined?
ORIGINAL: JoshKeller dropping it down to 60 lbs, the closest I could get them was about 1" apart at 20 yards. anyone have any experience in these? I assume the 300 size would be the .300 spine I'm looking for? http://keystonecountrystore.com/Archery_Equipment_-_Supplies/Archery_Arrows/Vapor_Arrows/Vapor_Pro_Series_Shafts/Page_1/ARSVB208__300.html |
RE: underspined?
No,I am actually doing the same thing on another thread and have said it is Archers Advantage many times,just kinda slipped my mind.
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RE: underspined?
yeah, $140 a dozen is a little more than I want to spend for a dozen arrows. How are just the plain whitetail series?
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RE: underspined?
ORIGINAL: bigcountry ORIGINAL: JoshKeller dropping it down to 60 lbs, the closest I could get them was about 1" apart at 20 yards. anyone have any experience in these? I assume the 300 size would be the .300 spine I'm looking for? http://keystonecountrystore.com/Archery_Equipment_-_Supplies/Archery_Arrows/Vapor_Arrows/Vapor_Pro_Series_Shafts/Page_1/ARSVB208__300.html I honestly feel like the draw is smoother with the 82nd than the general with speed mods. It just builds quick, stays there, has a slight hump at the end, but its more comfortable than the general IMO. and 46 fps faster according to the chrono ;) |
RE: underspined?
Strictly for a combination hunting/3d setup, how would the .300 goldtip ultralight be? For 3d, I can turn it down to 60 lbs, and be well above 5 gpp, and for hunting, I can add a 100 grain brass insert and get my foc way up.
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RE: underspined?
The 300 would be great.It is a little stiff at 60#'s and 28" arrow so you could add weight for foc or go to a longer arrow.
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RE: underspined?
Would it also be suitable for hunting at 68 lbs with the 100 grain insert? Or perhaps cut it to 29" and just shoot it as is?
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RE: underspined?
About the heaviest you would be able to go would be 65#'s.I wouldn't push it that far.About the exact same for a 29" arrow,can't quite handle 68 but 64 would probably be perfect.
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RE: underspined?
Will that change any when I add my standard cat whiskers silencers? :D
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RE: underspined?
Not enough to worry about.
I am getting you with the same speed as archer2,is that close? |
RE: underspined?
Hard to make out the exact numbers in his post, but I'm getting between 323 - 325 fps.
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RE: underspined?
ORIGINAL: JoshKeller Hard to make out the exact numbers in his post, but I'm getting between 323 - 325 fps. I had you at 324,I think we are good. He had you at 323 and change. |
RE: underspined?
ORIGINAL: JoshKeller yeah, $140 a dozen is a little more than I want to spend for a dozen arrows. How are just the plain whitetail series? But I do understand, as I haven't purchased them either. |
RE: underspined?
ORIGINAL: bigcountry ORIGINAL: JoshKeller yeah, $140 a dozen is a little more than I want to spend for a dozen arrows. How are just the plain whitetail series? But I do understand, as I haven't purchased them either. I also have some CT Cheetah Hunters at a .400 spine that I use with a 60# bow and they are just as good quality but a little lighter and cheaper. These arrows are also made in the USA if that is important. I have other arrow brands but my hunting arrows will likely always be Carbon Tech unless they change their standards. |
RE: underspined?
Well before spending the money on a whole dozen, I found 6 on archerytalk for $25. If they shoot well from my bow, I'll go ahead and fork up the cash for another dozen. :)
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RE: underspined?
ORIGINAL: JoshKeller Well before spending the money on a whole dozen, I found 6 on archerytalk for $25. If they shoot well from my bow, I'll go ahead and fork up the cash for another dozen. :) That is a heckuva price for 6. Are they already cut to length? |
RE: underspined?
cut and fletched and used for a month. guy said he wanted to go to something a bit lighter since he switched bows.
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