Using the dynamic spine calculator, my FOC is right at 25%. Is this too much?

It's not too much FOC with a carbon arrow,anything over 20% I call EFOC.Most of my carbons are around 16% to 20%.But with wood and aluminum I still like around 10% to 14%.I tune my arrows for the best flight and they usally end up in that area.

Not at all, my carbons run around 26% using the AMO method prescribed by Ashby. There are more than one formula to calculate %FOC that will give different answers. When comparing arrows, most speak in terms of AMO, is this the formula used in the Dynamic Spine Calculator?

Thanks,
DB

"What is your FOC?"

About 12%, from what I recall.

29.8%

Don't have a clue.  

I'm somewhere between 26 to 28 percent.

Im 22%. Just checked for the first time about an hour ago.

The older I get the more FOC I am.