FOC/EFOC-Minimum?

[wojo14]

#3342

Again. Looking for opinions.

What do you guys feel is a “minimum” foc/efoc?

My 2 carbon set ups are 29% and 24%

My aluminum set up is 20%

My hardwood set up is 12%

[Vintage Archer]

#19410

wojo14 wrote: Again. Looking for opinions.

What do you guys feel is a “minimum” foc/efoc?

My 2 carbon set ups are 29% and 24%

My aluminum set up is 20%

My hardwood set up is 12%

WOJO14

I DON’T THINK THERE IS A MINIMUM FOC FIGURE. UNLIKE A TOTAL ARROW WEIGHT GOAL OF 650 GRAINS WHICH IS NECESSARY TO BREACH BONE THERE IS NO SET FOC NUMBER THAT IS MANDATORY FOR A GOOD HUNTING ARROW ….. FOC IS SOMETHING WE CAN DO TO IMPROVE ARROW FLIGHT AND HELP INCREASE PENETRATION IN SOFT TISSUE. ACHIEVING A HIGH FOC IS A DESIRABLE GOAL. THERE ARE CATEGORIES OF FOC DESIGNATED BY DR. ED ASHBY BUT THEY ARE FOR REFERENCE OR USE IN CONVERSATIONS …YES A FOC OVER 30% IS GREAT BUT I WOULD NOT SACRIFICE THE GOAL OF 650+ GRAINS TOTAL ARROW WEIGHT FOR A ARROW OF LESSOR WEIGHT OF HIGH FOC. MOST OF THE TIME A HIGH FOC AND AN 650+ GRAIN ARROW CAN BE ATTAINED TOGETHER IF ONE HAS AN ARROW SPINE CAPABLE OF SUPPORTING A LOT OF WEIGHT UP FRONT.

TO ANSWER YOU SPECIFIC QUESTION ABOUT YOUR EXISTING ARROWS THE FOC APPEAR TO BE MORE THAN EXPECTABLE IF THE ARROWS FLY WELL AND WEIGH IN THE APPROXIMATE AREA OF 650 GRAINS:D

[Col Mike]

#19428

Thanks for that insight Joe.

Jason next time you visit I have field points already made in various weights that you can try on your arrows. But as Troy says–you need to bare shaft tune with the weight you are gonna use. And as you know I’m shooting 750gr arrows with 33%EFOC which Dave P told me minimum he accepts for elk (arrow weight not EFOC). Someone said isn’t that a bit much for whitetail—and I reflect on Dr. Eds comment that there is no such thing as overkill on the sacred prey.

[Ptaylor]

#20120

colmike wrote: Thanks for that insight Joe.

Jason next time you visit I have field points already made in various weights that you can try on your arrows. But as Troy says–you need to bare shaft tune with the weight you are gonna use. And as you know I’m shooting 750gr arrows with 33%EFOC which Dave P told me minimum he accepts for elk (arrow weight not EFOC). Someone said isn’t that a bit much for whitetail—and I reflect on Dr. Eds comment that there is no such thing as overkill on the sacred prey.

Mike, do you mean 750gr. is Dave’s minimum weight for elk? Or that 33% FOC is the minimum FOC for elk?

Thanks for the clarification,

Preston

[wojo14]

#20414

Mike, I gots plenty of tips at the old homestead.:D

I found that my set up I am shooting is doing well with 250 points and 300 points. The 300 points brings my weight up to 610g and 29% efoc.

I will stick with my original set up for the “whitys”. But, If we plan to hunt Canadian moose or CO elk next year, I will work on a heavier set up. Maybe even a heavier set of limbs as well.(51# set up now. Maybe go to 55# with 650-700g for the “Big Game”)8)

[David Coulter]

#20492

You guys are going after big stuff. My largest is whitetail. What I did might sound a little backward, but I chose my broadhead, a Tuffhead 225, matched a field tip (300 grain) to match. That’s Tuffhead with a 75 gr. steel adapter. Then I tuned the arrow and bow. I ended up with 635 gr, short of the magic 650, but it’s the weight that I can match hunting, target and stumping arrows to. I might add another 25 gr. to the adapter next year and that won’t change a hill of beans next to my target/stumping arrows and will carry it over the 650 weight.

Have fun, dwc

[wojo14]

#20840

dwc, I think you did it right. You should have a BH in mind when starting a set up. I tend to over think the whole thing. I too have a BH/point in mind when I start the process. I just let EFOC/FOC fall where it may. 8)

[Vintage Archer]

#20916

dwcphoto wrote: You guys are going after big stuff. My largest is whitetail. What I did might sound a little backward, but I chose my broadhead, a Tuffhead 225, matched a field tip (300 grain) to match. That’s Tuffhead with a 75 gr. steel adapter. Then I tuned the arrow and bow. I ended up with 635 gr, short of the magic 650, but it’s the weight that I can match hunting, target and stumping arrows to. I might add another 25 gr. to the adapter next year and that won’t change a hill of beans next to my target/stumping arrows and will carry it over the 650 weight.

Have fun, dwc

DAVID I don’t know the particulars of your arrow but a alternative for adding 25 grains weight would be to add a external footing. That is a easy,practical solution for 25 grains.:D

[Vintage Archer]

#20918

The proper way to build a FOC arrow is like suggested above by David and Wojo. Determine the broadhead you want to use and build the arrow around it. 😀

[wojo14]

#21208

I agree with Vintage on the footing! I foot all my arras.

I usually cut them to 1.5″. typically they come out around 15g.

Find some old aluminum arras and cut em up. There is a size out there that will fit.

Plus, I noticed that a footing does not change the spine all that much. A heavier insert could.

Just my 2 cents…8)

[Col Mike]

#21528

Joe is right on–pick the broad head, adapter (if needed) and insert (again if needed) then build the arras around it. Troys, how to bare shaft tune says it all.

Ptaylor–to answer your question Dave said 650 minimum–try for over 700 and 750 is the best. EFOC kinda comes with that if your using carbons. Being a beginner in this stuff I just went heavy to start with. Will never go back. My blunts are 75 grains shy of my field points and broadhead set ups, but that’s because a 225 gr. blunt is all I can find. But you know what–they shoot the same.

Mike

[David Coulter]

#21550

Rather than footing, it would be easy for me to just up the adapter weight a notch and I’d be right in there. I might do that next season. I have plenty of arrow length if I need to trim off a tad. Thanks! david

[Abel]

#24065

I don’t shoot carbon or AL anymore, but I did a good bit of playing with my woods and was able to get my hardwoods up to 20%, I don’t recall the exact grains overall. I looked for at least 650, I’m at 800ish now though with 300gr tuffheads up front. Shoot great and they hold up better than my Grizzly sticks did.

[Author]

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