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Old 03-05-2007 | 11:40 AM
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ArrowMike
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Joined: Oct 2006
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From: NW Illinois
Default RE: JR's Science Project
ORIGINAL: Swamp Dawg

I think the spineis OK. .340 for 27.5" arrow. 29.75" draw length at 68 lbs. At 8.3 grains per inch, that is 228 grains for the shaft only. The same style field tip was used for all tests. I think I will go shoot ten shots per test though, to see if the results vary.
OK. The next big ? is the block.It might not be consistant enought for your test.
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