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stickflinger76
March 21st, 2005, 10:43 PM
How important is having proper arrow front of center for arrow accuracy? Gold tip recommends 8-12% mine is 13.75 with 100grain tips, any advice would be appreciated. THANKS

Chief4hunting
March 22nd, 2005, 02:40 AM
Here's my 2 cents. If it's shooting good then don't worry about it. If your arrow doesn't have a tendency to dive on you, you should be fine. Some other references for FOC use 7 - 15% as their recommended numbers.

Matt Palmquist
March 23rd, 2005, 05:11 PM
I have also been questioning FOC lately. How important is it in good arrow flight. I am shooting GT55/75 with 75 grain points, and it seems like my arrow flight isn't very good. I tend to shoot ok for the most part. By the FOC calculator on GT website my FOC is 8.8 %. I think that is probably on the low end, but is this adequate? If I switched to 75/95 like I have been considering my FOC would be 8.3 %. I can rememdy this by going to a 100 grain point, but I really like the 75 grain broadheads that I have been using.

Any explanation of FOC importance would be appreciated.

Thanks,
Matt

Robert58
March 23rd, 2005, 08:37 PM
If you do a search, you will find a wealth of information. Somewhere I saw it listed that in Field archery and FITA a FOC of 10 to 15% is more desirable. For the most part the higher the FOC without increasing the arrow weight to much, the better an arrow will buck the wind in long range shooting. I have shot 50 grain points in my arrows for 3-D, but I put in 75 to 85 for Field and to shoot the American round.

Robert

Brown Hornet
March 24th, 2005, 12:10 PM
It is more important the farther you shoot. Most hunting, and 3D distances you don't need a high FOC. That being said if you shoot field or FITA you will want more. I like the 11+% range depending on the arrow. Don't get me wrong you can still shoot good groups with less but a higher FOC will help you out.

You say you have a 13.75% FOC man that is a ton for only using a 100 grain point. Just curious, what is your setup? Just guessing I am thinking you may be underspined.

Hollowpoint
March 24th, 2005, 02:36 PM
My arrows are 30.5" long, my veins have to be 4", and I use uni bushings.....so to get 10.5%....I am shooting 120gr tips on my 22's. :eek:
With feathers, I can get the same FOC with 100gr tips, but feathers are a pain in the arse, so i'm stickin' with the veins. ;)

stickflinger76
March 25th, 2005, 01:11 PM
To answer your question, I went and picked up the new Gold Tip Ultralight 400 for this summers 3-d shooting and the only way I could keep my 5 lbs/grain @ 70 lbs. was to use 100 grain tips (screw in field points so add 15 gr for insert) Arrow spec 7.4 gr/inch @27" ,GT nock, insert, 100 gr tip, 2.5" vanes, total weight is 337 grains.

kennybowtech
March 26th, 2005, 09:17 AM
My arrows are 365.5 total using 100 grain tips, I'm shooting vapor 3000 27 1/2" long with a tip to tip length of 28 5/8". Bowjackson's FOC caculator has figured 13.5% FOC. I'm shooting 62 lbs. @ 28" draw, which comes out to 12.77 gpi, and 5.9 gpp(per pound). Is this underspined?

JAVI
March 26th, 2005, 09:55 AM
I'd say that you could easily be underspined with that setup... from what I could tell looking at the Blackhawk web site... the 4000 would probably be a better match... And there is nothing wrong with 13% FOC... although for 3D ranges FOC isn't nearly as important as for field or FITA...

teammac
March 26th, 2005, 01:10 PM
For hunting I tend to stay closer to a 12-15% FOC. 3D I tend to stay around the lower part of the recomended FOC% scale 7-8%. Better stabilized arrow flight tends to favor a heavier FOC% in return equaling more KE for hunting and a better grouping of broadheads to field point relationship. Just my opinion.

DREAMTRUCK
March 27th, 2005, 12:26 PM
would appreciate someone listing links to the above-mentioned foc sites. could not find any.
i expect my foc 8 % is low so need help re-assessing my arrow setup for target.

thanks

geneinidaho
March 27th, 2005, 02:22 PM
This should get you what your looking for;

http://www.eastonarchery.com/downloads/programs/ShaftSelector2005/setup.exe

Brown Hornet
March 28th, 2005, 02:45 PM
To answer your question, I went and picked up the new Gold Tip Ultralight 400 for this summers 3-d shooting and the only way I could keep my 5 lbs/grain @ 70 lbs. was to use 100 grain tips (screw in field points so add 15 gr for insert) Arrow spec 7.4 gr/inch @27" ,GT nock, insert, 100 gr tip, 2.5" vanes, total weight is 337 grains.


You still aren't at 5 grains. I would turn the weight down some. You could also go to a glue in 100 grain point to loose the insert and it will help you out FOC wise and spine wise. Personally I think you are light.

WGMitch
March 29th, 2005, 10:56 AM
http://www.bowsite.com/bowsite/features/practical_bowhunter/broadheadflight/