Ideal FOC?
09-02-2003, 08:40 PM
#1
Nontypical Buck
Thread Starter
Join Date: Feb 2003
Location: Arlington TX USA
Posts: 2,214
Ideal FOC?
What is the ideal FOC to achieve consistent and accurate arrow flight? I installed some tracer nocks in my ACC' s this year and now I' m getting a little erratic arrow flight, especially with fixed blade broadheads. The tracer nocks weigh 28 grains each nad it' s all the way on the back of the arrow. I can' t go to a 125 grain head because that puts me out of the recommended spine range for my draw length, weight, and cam type. I suspect that it shifted my FOC to the rear a pretty good bit.
Any help would be appreciated.
Any help would be appreciated.
09-03-2003, 08:47 AM
#3
Giant Nontypical
Join Date: Feb 2003
Location:
Posts: 7,571
RE: Ideal FOC?
Personally, with my setup, I have my FOC aroun 14-15%. I personally like to keep it on the high side. It seems to work well with Fixed Broadheads. Inorder for me to keep the FOC where I like it, I use a 135 grain fixed broadhead with an additional 50 grain weight.
09-03-2003, 11:24 AM
#6
Typical Buck
Join Date: Feb 2003
Location: Havre de Grace MD USA
Posts: 703
RE: Ideal FOC?
What is the effect of having an FOC of less than 10%...say in the 6-8% range?
Is there any published information or report on these findings.
My FOC was around 10%, but when I crested my hunting arrows the FOC went down quite a bit. I was thinking I may have to increase my point/broadhead weight to counter-balance the weight of the crests.
Any thoughts on this?
Thanks!
Is there any published information or report on these findings.
My FOC was around 10%, but when I crested my hunting arrows the FOC went down quite a bit. I was thinking I may have to increase my point/broadhead weight to counter-balance the weight of the crests.
Any thoughts on this?
Thanks!
09-03-2003, 11:28 AM
#7
Join Date: Jul 2003
Location: Tulsa, Oklahoma
Posts: 1,051
RE: Ideal FOC?
I' m like Turk_man. For some reason, I could never get the FOC up where everyone said it should be. Mine stayed around 7 percent, but cut bullet holes thru paper, and could group 5 arrows inside a 2" circle at 20 yards. And, my broadheads (Thunderhead 100) hit the same place as my field points.
BTW, my set up, was 43" axle to axle bow, 7" brace height, 70 lbs pull, 65 % letoff, 230 fps, 31" XX78 2514 arrows, three 5" plastic vanes with a pretty severe helical, and 100 grain points. Oh, I shoot fingers too.
I think, maybe, that the old school of 12-15 % FOC was for the majority of hunters (back in those days) that didn' t meticulously fine tune their bows.
Maybe???
BTW, my set up, was 43" axle to axle bow, 7" brace height, 70 lbs pull, 65 % letoff, 230 fps, 31" XX78 2514 arrows, three 5" plastic vanes with a pretty severe helical, and 100 grain points. Oh, I shoot fingers too.
I think, maybe, that the old school of 12-15 % FOC was for the majority of hunters (back in those days) that didn' t meticulously fine tune their bows.
Maybe???
09-03-2003, 02:00 PM
#8
Giant Nontypical
Join Date: Feb 2003
Posts: 9,175
RE: Ideal FOC?
I think, maybe, that the old school of 12-15 % FOC was for the majority of hunters (back in those days) that didn' t meticulously fine tune their bows.
Somehow, I don' t seem to recall not meticulously tuning my bows, but then...
memory fading, eyesight blurring, Depends soaked....
[:@]
It' s a point of aerodynamic physics that the more weight forward, the more stable the arrow is in flight. Put enough weight up front and you can do away with fletching altogether, but that would mess with trajectory.