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Can someone run this through some arrow selection software and tell me what spine is right. My dad has an older jennings carbon estreme two cam. He shoots 62 pounds at 29 inches his arrows are cut to about 30 inches and wants to shoot the full metal jackets. He went to a shop a few weeks ago and they gave him some 340s. he shoots 100 grain tips and I told him he was overspined and he has been getting some funky arrow flight. The shop said they tuned his bow and everything. Could someone please run that through for me. Thanks in advance
 

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You could also download the Easton shaft selector program that will give you every bit of info you could ask for on their shafts. I like the KE and FOC calculators.
 

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Man I remember that bow. My best friend growing up had one. Infact he still has it. But anyway. He his way over spined with 340s. He should more than likey be shooting 400s. He could also probably cut a bit more shaft off for tunning purposes.
 
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