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Tip Weight/Spine

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DC:
Sorry Pat sometimes I don't write very clearly.
So  "Obviously there is going to be a point where this goes bad. Is it when the FOC moves too far back?"

Pat B:
I've not dealt much with FOC so I doubt I could give you a good answer. I guess if you are bare shaft testing the arrow would loose stability the farther back the FOC is. Fletching would change that though due to drag.

TSA:
the turkish flight arrows actually have a negative FOC.
usually though negative foc is purported to cause arrows to somersault once the velocity bleeds off.

DC:
There must be a saw off point with the FOC where accuracy starts to suffer and increasing the fletching size to compensate just bleeds off speed. I have to do some reading on your website.

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