Hunting Washington Forum
Big Game Hunting => Bow Hunting => Topic started by: sakoshooter on December 28, 2010, 06:30:53 PM
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Can't figure this one out guys. What does it stand for?
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Front of center...
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Forward of Center or Front of Center..
An arrow setup can have weight which is FOC. This often is used when people describe a setup which has weight which is forward or front from the center of the arrow.
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The concept is one you're undoubtedly familiar with if you've ever put a paperclip on the front end of a paper airplane. You instinctively know why this is a good idea and how it helps airplane cast and flight.
Now apply that concept to your arrow. http://archeryreport.com/2010/09/arrow-foc-basics-calculate/ (http://archeryreport.com/2010/09/arrow-foc-basics-calculate/)
This is a pretty good overview and how to perform the appropriate measurements. I have found 12% to 14% to be good for my set up.
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I recommend that you don't underestimate or overlook how much FOC plays out with game of penetration. I prefer 20-35%.
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I saw a segment on a hunting show once with randy ulmer explaing why foc was good. He said it help buck wind better, arrows will fly better, and will penetrate deeper.
Do you remember those nerf footballs with those wings on the shaft behind the ball? They had commercials of pro quarterbacks throwing them like 80 yards. You could throw a "wounded duck" and the ball would stabilize in no time. Think of the football in relation to an arrow. The football its self would be the broadhead or field tip. The shaft the "wings" are connected to is the arrow and the "wings" themselves are the fletchings. those balls had an extreme amount of foc and that's why they flew so well. Hope that made sense. :chuckle:
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That's a good explanation Button Nubs.
:yeah:
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Thanx everyone for that.
Button, that's a great way to explain it.
Bowforelk, I saved that link in my favorites. Good info there. Cool wraps also.
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This thread and others like it is why I like this site; hunters helping each other. Our passion will never die. Good huning, TC66.
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Its a good time of year to learn and play with FOC. not much going on near the first of the year and once you start playing around with your FOC it will help your understand a lot more about your arrows. I usually run a very low FOC in the spring and early summer for the 3-d shoots, tournaments, and for the longer and flatter shots. When it gets to the time of year when I start to switch into hunting prep mode I go up to around 20-25% FOC. Penetration in much deeper ( partially because I use a heavier tip and add weight to the inside of insert) and my arrows stabilize much better when my bow is slightly out of tune. Might not sound like much of a good thing to be out of tune while hunting but makes me feel better knowing my bow can take a little abuse and still shoot straight. Take sometime and play if your FOC. shoot through paper with your regular set up out around 10 or 15 yards and then slightly adjust your bow out of tune and shoot an arrow with a much greater FOC, it amazing what a little weight up front can do to help stabilize you arrow. I am always doing what I can to keep my bow and my arrows in tune so I am not trying to sound like a slob or anything but it is amazing to find out how your equipment interacts with slight adjustments here and there and how just a few more grains up front on an arrow can really change the the initial flight of it.Good luck and have fun.
