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  1. General Archery Discussion
    Hello, this is my first time on this forum but I am trying to figure out what would be the appropriate spine for my new arrow build. Starting with black eagle rampages 25.5 inches long and 75 grain easton HIT insert with 100 grain tip. I have ran these numbers in multiple arrow spine calculators...
  2. General Archery Discussion
    Do spine calculators tell you which arrow spine you need to start off with, or do they tell you the spine you end up with given your desired specs?
  3. General Archery Discussion
    I currently have Gold Tip Hunter Pro shafts with a 300 spine. I am planning on adding 100 grain brass inserts and shooting a 150 grain broadhead for total point weight of 250 grains. I am shooting an RX-7 Ultra at 68 pounds with a 29 inch draw length. Will I be underspined with this much upfront...
  4. General Archery Discussion
    hoping someone could help or run a calculator for me to see if I aim underspined. Current setup is Hoyt ventum 33 29” DL 70# BE Spartan 300 spines cut 28.25 carbon to carbon 70 gr ethics inserts and 100 grain points 4 fletch aae max pro nocturnal nocks according to charts I am 300 or possibly...
  5. General Archery Discussion
    As the title says can someone confirm my spine is ok. I’m getting varying info on each spine checker I use online. Thanks in advance. -Mathews VXR 28 -28” draw #60 85% -Axis 5mm 340 cut 27.5 carbon to carbon (27.75 to throat of nock -75 gr hit insert -125 broadhead/field point -482.2 with...
  6. General Archery Discussion
    I've been shooting barebow recurve for about a year now, but prior to that have built/maintained/tuned my kids bows for a number of years. That is to say, I'm reasonably confident with most aspects of recurve build, setup and tune ... except that using arrow charts remains a frustrating mystery...
  7. General Archery Discussion
    Hey all, anyone know of a spine calculator program that works on macs? I am looking into some new arrows for a new bow and so far the programs I've seen like TAP only run on windows. Or anyone have one and mind running some numbers through for me? Looking to outfit some 28.5 inch arrows, 125 gr...
  8. General Archery Discussion
    So i have the spine checker built, i just need to find a weight and a good way to hang it on the shaft. I dont have access to a machine shop anymore sadly so i cant really do anything crazy. I live in a VERY small town with a local hardware store. What are some ideas? Or does anyone melt down...
  9. General Archery Discussion
    Bow build. Are my arrows under spined Hi hoping some one can help me out. As i know im borderline. Hoyt carbon defiant turbo 70 350ata Set at 29 DL 71lb Gold tip hunter xt 300 arrows 9.3g/i Cut at 28.5 50 grain insert 100 grain points Total weight 458grains Is this going to be acceptable? I...
  10. General Archery Discussion
    Using the SFA (Pinwheel) software, for a 29.25" arrow at 29" draw (I like my broadhead in front of my knuckles) & 63 lb draw weight, I come up with an optimal spine of 0.339 for a 125 gr head w/ 50 gr insert, and 0.327 for a 150 gr head w/ 50 gr insert. Using the Archer's Advantage software...
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