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    Arrow setup question

    Currently shooting a 27.5" .340 spine Easton Axis right now. Finished weight with a 100 grain point, 3 blazers and a wrap comes in around 413. Playing with archers advantage yesterday showed my arrows to be in optimal spine (shooting a 2014 hoyt CS34 at 28.5" and arrows at 287 fps). I started to mess with different arrow setups using black eagle rampage shafts. Using a .350 spine cut to 28", a 50 grain brass insert, 100 grain point, 3 Blazers and a wrap my arrow weight is 414, and my spine is still optimal. How is this possible? I would've thought I'd have to drop down to a .300 spine. Am I screwing up somewhere? I wanna make sure I get this right before I order the arrows and components.

    Ron

    #2
    What's the grain per inch on each arrow?
    I'm thinking that's the difference

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      #3
      Black Eagle Rampage 8.2 GPI
      8.2 x 27.5"= 225.5 grain shaft

      Easton Axis 9.5 GPI
      9.5 x 28.5" = 266 grain shaft

      266-225.5 = 40.5 grain difference in the shaft alone

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        #4
        Arrow setup question

        That's why I'm confused. The rampage weighs less, and I'm putting more weight out front with the brass insert, how is a .350 spine optimal and .300 spine too stiff?

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          #5
          Weird I just threw all the data in again and it says the .350 spine is marginally weak and the .300 is slightly stiff. Must have fudged some numbers up.

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            #6
            Arrow setup question

            You can cut arrows longer or shorter and add weight to the nock end to tweak the spine.
            I started a thread called FOC increase that's got over 1k replies
            I know that Enewman has started a couple of threads recently
            Muddyfuzzy is an arrow builder on here, there's others I just don't who they are
            Last edited by Pushbutton2; 10-27-2015, 11:57 AM.

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