calculate my foc!!!!
05-31-2003 | 02:40 PM
#1
Thread Starter
Fork Horn
Joined: May 2003
Posts: 104
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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
Joined: Feb 2003
Posts: 2,062
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From: CWD Central, WI.
06-01-2003 | 04:31 PM
#4
Joined: Feb 2003
Posts: 254
Likes: 0
From: Stillwater, Oklahoma USA
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.
