rankbull

I know I should know this after 9 years of shooting but what is FOC? Some one pleas tell me so I can go back to pretending to know it all.

badger109

GOOGLE IT!

Front of Center- the distance between the center of the arrow and the balence piont divided by the arrow length times 100 = FOC%
I think,

and a good foc is 10-15% I think.

rankbull

thanks, butI still dont get it

The Rev

That's what Gibblet says each time the phone rings.

Arthur P

It's how far forward the balance point of your arrow is from the arrow's center point. Front of Center. The further forward the balance point, the higher the FOC% and the more stable your arrow is in flight.

But then, the more arrow weight you have, regardless of distribution, can cut down on arrow speed. Also, you can put too much weight up front for the arrow's spine range to handle. So you have to design your arrow to come up with the best blend of stability and speed while staying within the arrow's spine range.

It's not hard to do, just requires a little thoughtful planning.

rankbull

Thanks for the reply

Straightarrow

This is the part that precious few do. An arrow shaft should be chosen based on the weight you desire to put on the tip, which should be based on the FOC you desire to shoot. There are credible studies from Ashby that demonstrate that high FOC arrows penetrate further in animals. We already know that they are more stable and forgiving of adverse conditions.

What it boils down to, is that if you want to shoot high FOCs, you generally will need a stiffer shaft than what most of the arrow charts recommend. The extra weight on the tip, will weaken them in flight.