Guest bruteshooter Posted February 27, 2007 Report Share Posted February 27, 2007 I did a search for this subject expecting lots, but nothing. I used two different calculators and got this. My FOC is 8.2% A 30.5" arrow (total all) with a back end to point of balance at 17.75" I know if I add weight to the front of the arrow, my % will raise. I'm shooting 100 gr. fixed 3 blade muzzy's. Should I change to 125 gr. tips or sit on what I got? Quote Link to comment Share on other sites More sharing options...
Widowmaker Posted February 27, 2007 Report Share Posted February 27, 2007 Re: Arrow FOC What arrow are you shooting? On my Gold tips they recommend 8% --12% FOC. 10% is optimal. Quote Link to comment Share on other sites More sharing options...
Guest bruteshooter Posted February 27, 2007 Report Share Posted February 27, 2007 Re: Arrow FOC Carbon Force Pro 200's, wraps, and 2" blazers Quote Link to comment Share on other sites More sharing options...
Leo Posted February 27, 2007 Report Share Posted February 27, 2007 Re: Arrow FOC Absolutely change to 125 gr heads. An FOC of 8% flys ok... with field points. With todays lighter carbon shafts I personally believe you need a much higher FOC with broadsheads (fixed or mechanical) IMO, you definately need at least 10% Quote Link to comment Share on other sites More sharing options...
VTbowman Posted February 28, 2007 Report Share Posted February 28, 2007 Re: Arrow FOC Don't get caught up in "the numbers". Shoot them and see how well they group at the distances you plan to hunt with your bow. I say this from experience. For many years I was SOOOO concerned over all the "numbers". FPS, KE, MO, FOC etc... I HAD to have super fast, super light arrows and get tons of KE to hunt. Had to have it... Then I switched to trad archers for a few years. All those "must have" numbers to get arrow flight, pass threw, etc. are nothing more then selling points or bench marks for advertizers to push their wares IMHO. I shot a 525g total carbon arrow. 250g heads, wraps, feathers, off a trad bow that barely broke 140 fps, an FOC of like 35+ and I got pass threw on deer with it at 25 yards. My point being is that bow and arrow combonation was just as deadly as the compound bows with there 280 to 300+ fps, KEs of 70#, and arrow with perfect "suggested" FOC of 10%. Yes it may not of been out to 40+ yards but then again, and this is JMO, but is not archery hunting how close you can get to an animal, not how away away you can hit it? Yes try to be within the suggested warrenty advice of said equipment. But in the end its how well the dang arrow flies and hits what your aiming for that count when you hunting. More speed, KE, MO does not make it better or more deadly. JMO but your arrow set is fine IF your bow can shoot it well when you do your part. Quote Link to comment Share on other sites More sharing options...
Leo Posted February 28, 2007 Report Share Posted February 28, 2007 Re: Arrow FOC VT brings up a valid point. The numbers can lead you astray. So please let me make this clear. The 10% I am suggesting is for Modern Compounds shooting Carbon arrows only. I have personally experienced heavier aluminum arrows shooting just fine with lower FOCs. FOC is one of those numbers that can really confuse you because it's a percentage. IE. it's a "rule of thumb" a guide. It's not something that has a perfect value. But, the lighter the shaft the higher FOC needs to be. Quote Link to comment Share on other sites More sharing options...
Guest bruteshooter Posted February 28, 2007 Report Share Posted February 28, 2007 Re: Arrow FOC I'm getting a set of 125 grains on loan and just trying them against what I have. After hearing your valuable and respected opinions, I think it's best to physically see rather than trying to do the math. Quote Link to comment Share on other sites More sharing options...
Leo Posted March 1, 2007 Report Share Posted March 1, 2007 Re: Arrow FOC Just curious what's your draw weight with those shafts? A 125gr head will reduce your effective spine. If you're spined close right now, you may have to turn your draw weight down some to shoot the 125s right. Probably only a couple pounds but keep that in mind. Don't get me wrong I still think the 125s are a better choice. But long arrows are more sensitive to spine issues than short ones. Quote Link to comment Share on other sites More sharing options...
dg Posted March 1, 2007 Report Share Posted March 1, 2007 Re: Arrow FOC Don't worry about FOC at hunting distances. If the arrows are grouping, you are good. Quote Link to comment Share on other sites More sharing options...
Guest davidmil Posted March 1, 2007 Report Share Posted March 1, 2007 Re: Arrow FOC You need the higher FOC for arrow stability down range, especially at longer ranges. BUT, you can't just say I'll add weight to the front to get it and still have a balanced system. You have to take into consideration the poundage, you're shooting and the arrow. If your present arrow is border line weak the extra 25 grains may push you over the limit and throw the whole thing out of whack. You should use one of the many calculators to pick a total combination. AND... then it's just a starting point. Also figuring into the system is how you shoot, fingers, release etc. I like http://home.att.net/~sajackson/archery.html Quote Link to comment Share on other sites More sharing options...
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