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Determine ~ Arrow Speed
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*Calculator will provide ~ Arrow Speed similar to Chronograph but not be as precise.
Arrow Speeds Without a Chronograph (Field Test)
1. Start by shooting a group with your bow at a target from 20 yards using your 20 yard pin.
2. Mark the center of your group.
3. Next, shoot from 40 yards , still using your 20 yard pin and aiming at the same point on the target as before.
4. Mark the center of this group.
5. Finally, measure the distance between the two marks.
6.Refer to the numbers below for your arrow speed.
Approximate Arrow Speed (fps) Spread between 20 & 40 yard groups (inches)
220 = 28.7
300 = 15.5
240 = 24.2
320 = 13.6
260 = 20.6
330 = 12.8
280 = 17.7
Example Chart of Arrow F.O.C.
Determine Front of Center %
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Determine Arrow Weight
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Kinetic Energy Calculator
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