calculate my foc!!!!
05-31-2003, 02:40 PM
#1
Fork Horn
Thread Starter
Join Date: May 2003
Posts: 104
calculate my foc!!!!
i' m shooting a martin panther with 70#. My arrow is 27.25" from bottom of knock grove to end of shaft ( where i cut it). I' m shooting 3 4" flexi-fletch vanes on beman ICS camo hunter plus 500 (7.9gpi). The insert weight is 23 gr and knock weight is 13 grain. I' m either going to shoot 85 gr spitfires or 75gr jak hammers. Please calculate my FOC for those 2 broadheads and would you also do it using beman 400' s (9.1gpi) instead of the 500' s? Any info would be appreciated!!
05-31-2003, 02:56 PM
#2
Join Date: Feb 2003
Location: CWD Central, WI.
Posts: 2,062
06-01-2003, 04:31 PM
#4
Join Date: Feb 2003
Location: Stillwater, Oklahoma USA
Posts: 254
RE: calculate my foc!!!!
FOC
All measurements are from the bottom of the nock groove.
With broadhead on, find the balance point of the arrow. Measure from nock groove. Wright this number down.
Arrow length divided by 2. Subtract this # from the balance point #.
Then divide this # by the arrow length. Multiply by 100 to get percentage.
10% - 15% is desired.
Got this from Petersens Bowhunting Mag.
All measurements are from the bottom of the nock groove.
With broadhead on, find the balance point of the arrow. Measure from nock groove. Wright this number down.
Arrow length divided by 2. Subtract this # from the balance point #.
Then divide this # by the arrow length. Multiply by 100 to get percentage.
10% - 15% is desired.
Got this from Petersens Bowhunting Mag.
