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Old 01-08-2018, 05:25 PM   #1
MEsquivel
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Default 5/16 arrow question

Hey guys!
I got a new set of arrows a friend made me in leopard wood.
They're nice and heavy. Straight and spinned just right.
Well I cut them to length and got my 160 fieldpoints on and they flew like darts.
The problem started when I tried on a broadhead.
My arrows went everywhere. I only have one (with a tusker bh) that flew true.

Now here comes my questions:
Do 5/16" arrows necessarily need bh's with a 5/16 ferule? Can 11/32 bhs work?

Does anyone know of a maker of a 160gr bh in a 5/16 ferule?

I feel like a newbie. But I guess I am new to the 5/16's.
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Old 01-08-2018, 05:56 PM   #2
jerp
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Old 01-08-2018, 06:19 PM   #3
Dkincaid
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Did you spin test them


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Old 01-08-2018, 06:33 PM   #4
MEsquivel
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Quote:
Originally Posted by Dkincaid View Post
Did you spin test them


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Yes. Theyre not that great.
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Old 01-08-2018, 06:35 PM   #5
MEsquivel
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I melted 50gr of fishing sinker into an 110gr 5/16 broadhead.
That should work.
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Old 01-08-2018, 07:02 PM   #6
Trumpkin
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The mismatched diameters won't affect arrow flight. Sounds like a broadhead alignment issue. As stated, spin check them, tweak them, remount them. Do whatever it takes to get them spinning true. After that you can start to worry about inconsistent arrow flight.
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Old 01-09-2018, 07:30 AM   #7
BernieH
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They could be a tad weak in spine. It may not show up with a field point but a broadhead would magnify it. Try a lighter broadhead or build out the sideplate. The above assumes the assembled arrows are spinning well.
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Old 01-09-2018, 11:22 AM   #8
MEsquivel
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Quote:
Originally Posted by Trumpkin View Post
The mismatched diameters won't affect arrow flight. Sounds like a broadhead alignment issue. As stated, spin check them, tweak them, remount them. Do whatever it takes to get them spinning true. After that you can start to worry about inconsistent arrow flight.
Thats whats happening.
The ferule is larger then my shaft and I cant get them to line up exactly in the middle with a little wobble room all around.

Quote:
Originally Posted by BernieH View Post
They could be a tad weak in spine. It may not show up with a field point but a broadhead would magnify it. Try a lighter broadhead or build out the sideplate. The above assumes the assembled arrows are spinning well.
These have been tested and spine is the same as my other arrows.
the only thing that changes is the diameter and overall weight.
Leopardwood shafts are heavy.
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Old 01-09-2018, 11:37 AM   #9
Phillip Fields
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Since they are a smaller diameter, that could change the tune. Think of it as with a smaller diameter arrow the center of the arrow is closer to the centerline of the bow. Probably not the case here, but something to think about.
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Old 01-09-2018, 11:40 AM   #10
stickbowcoop
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3Rivers Archery sells adapter rings for using 11/32" points on smaller diameter shafts. That have a lot of size options so maybe you can find one to fit your 5/16" arrows. It would allow you to push the head square to the adapter to maybe make it easier to get a good spin. Just an idea.
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Old 01-09-2018, 11:59 AM   #11
caughtandhobble
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Happy New Year my Friend... I can't help out, sorry. I do want to see pictures, you always have the prettiest arrows.
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Old 01-09-2018, 01:30 PM   #12
BernieH
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Smaller diameter would make the shafts act stiffer when shot even if they spine the same as your other arrows.

Heavier mass would make the shafts act less stiff when shot even if they spine the same as your other arrows.
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Old 01-10-2018, 04:21 PM   #13
MEsquivel
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Quote:
Originally Posted by Phillip Fields View Post
Since they are a smaller diameter, that could change the tune. Think of it as with a smaller diameter arrow the center of the arrow is closer to the centerline of the bow. Probably not the case here, but something to think about.
Iíll have to go back and paper tune. Thanks!

Quote:
Originally Posted by stickbowcoop View Post
3Rivers Archery sells adapter rings for using 11/32" points on smaller diameter shafts. That have a lot of size options so maybe you can find one to fit your 5/16" arrows. It would allow you to push the head square to the adapter to maybe make it easier to get a good spin. Just an idea.
I looked..no luck. Its all about the spin. Iíll have to reinstall carefully, I guess.

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Originally Posted by caughtandhobble View Post
Happy New Year my Friend... I can't help out, sorry. I do want to see pictures, you always have the prettiest arrows.
Hey Ben! Happy New Years, bud!!
I hope youíre doing well.
I didnt make these. But they sure are nice.

Quote:
Originally Posted by BernieH View Post
Smaller diameter would make the shafts act stiffer when shot even if they spine the same as your other arrows.

Heavier mass would make the shafts act less stiff when shot even if they spine the same as your other arrows.
I got lost in this one. I cant figure out why if they where spine tested after they where tappered. But all in all I guess Iíll have to start over and paper tune.
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