Bow Manufacturer IBO Speed (ft/sec)
Draw Weight (lbs)
Draw Length (inches)
Arrow Weight (grains)
Weight Added to String (grains) (20gr = peep only, 45gr = peep and tube)
Arrow Speed
0 ft/sec
0 mph
Arrow Kinetic Energy
0 ft-lbs.
You should be able to successfully harvest
Shaft Weight (grains per inch)
Shaft Length (inches)
Point Weight (grains)
Insert Weight (grains)
Nock Weight (grains)
Number of Vanes
Vane Weight (grains per vane)
Wrap Weight (grains per vane)
Arrow Weight
0 grains

FOC stands for Forward of Center balance point. This measurement results from the relative weights of the components used in the arrow: shaft, insert, head, fletching and nock. A properly balanced arrow measurements of 7 to 10%.

Full Arrow Length (inches)
Distance from nock end of the arrow to balance point of your arrow (inches)
Arrow FOC
0%

Pick a tree near the target and draw an imaginary line straight out to a point at eye level. This is the distance needed for the chart. In this example, 20 yards. A guesstimated angle of 45 degrees will require an aiming distance of 14.1 yards even though the straight line distance is 28 yards. Remember, it doesn't matter if the angle is up or down, the answer is still the same.

Horizontal Distance (yards)
Angle (degrees)
With a horizontal distance of 0 yards and an angle of 0 degrees,
aim as if you're shooting at a distance of 0 yards.
  Angle (up or down)
Horizontal Distance in yards
(NOT Straight Line Distance)
10° 15° 20° 25° 30° 35° 40° 45°
5 yards 4.9 4.8 4.7 4.5 4.3 4.1 3.8 3.5
10 yards 9.8 9.7 9.4 9.1 8.7 8.2 7.7 7.1
15 yards 14.8 14.5 14.1 13.6 13.0 12.3 11.5 10.6
20 yards 19.7 19.3 18.8 18.1 17.3 16.4 15.3 14.1
25 yards 24.6 24.1 23.5 22.7 21.7 20.5 19.2 17.7
30 yards 29.5 29.0 28.2 27.2 26.0 24.6 23.0 21.2
35 yards 34.5 33.8 32.9 31.7 30.3 28.7 26.8 24.7
40 yards 39.4 38.6 37.6 36.3 34.6 32.8 30.6 28.3
45 yards 44.3 43.5 42.3 40.8 39.0 36.9 34.5 31.8
50 yards 49.2 48.3 47.0 45.3 43.3 41.0 38.3 35.4
55 yards 54.2 53.1 51.7 49.8 47.6 45.1 42.1 38.9
60 yards 59.1 58.0 56.4 54.4 52.0 49.1 46.0 42.4
65 yards 64.0 62.8 61.1 58.9 56.3 53.2 49.8 46.0
70 yards 68.9 67.6 65.8 63.4 60.6 57.3 53.6 49.5
75 yards 73.9 72.4 70.5 68.0 65.0 61.4 57.5 53.0
80 yards 78.8 77.3 75.2 72.5 69.3 65.5 61.3 56.6