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.

RE: Ideal FOC?
 

I like to keep it around 12-15% FOC

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.

RE: Ideal FOC?
 

I like being over 10%. If you' re shooting 4" vanes and need to bump FOC up a notch, you can shave about 16 grains off the aft end of the arrow by switching to 4" feathers.

RE: Ideal FOC?
 

I feel like the oddball because mine is only 8.6%. I get great broadhead flight and with a 600gr arrow at 230 fps incredible penetration.

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!

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???

RE: Ideal FOC?
 

Bones creaking, hair turning white, face getting wrinkled, my life flashing before my eyes...

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.

RE: Ideal FOC?
 

OK Arthur P...from your rocking chair...and with your experience...what %number works the best? assuming your memory serves you correctly.[&:]

RE: Ideal FOC?
 

I' ve done okay, not great, with FOC as low as 9%, but like I said, I prefer being over 10%, generally between 10-12%.