rochelle

whats the heavyest broadhead that you can use on a carbon arrow?

The Mouse

For hunting, you want a broadhead that will give you a Front of Center (F.O.C.) percentage between 10-15%. You wouldn't want a broadhead that would cause F.O.C. to be over 15%. With that in mind, I present the following courtesy of Larry Wise in his book Tuning and Silencing Your Bowhunting Shooting System:

P = (.5N + 2F - A(N+F)(.5+R)- RAW) / ((R-.5)A + 1))

where:

A = total arrow length including point and nock
F = total weight of fletching in grains
N = weight of nock in grains
P = point weight in grains
R = F.O.C. percent in decimal form
W = total shaft weight without nock, fletching or point

For your calculation, set R = .15 and input your own weights and lengths. Doing a little algebra will give you a P value that will be the maximum point weight you should consider. This may not be the best broadhead weight for your particular setup, however. The truth must be found though group testing using various point weights.

Personally, if I was looking for a relatively heavy broadhead on my carbons I would forget the formula and just try something in the 125 gr. class: lots of brand and style choices in this weight.



HuntingNet Member since Spring 2001

Dublelung

I have used 190 grain Simmons Landsharks on Easton A/C/C 3-71's with excellent flight results at around 270 fps.

rochelle

I was thinking about trying a broadhead heavier then 125 grains for deer hunting.Hey doublelung what kind of damage did those 190 grain simmons do?

jrb CO

I used a 210 grain steelforce 2 blade on some weighted Goldtips to blow through a moose last year, with a 56# longbow.

Dublelung

Rochelle, It is hideous what this head does to a deer, they leave abloodtrail like no other head I have ever used. If they are sharpened correctly I would put them up against any head in a performance test, and they fly suprisingly well due to the tapered design

-DL