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%

Use the straight-line distance to the target. This is the distance needed for the calculation. In this example, a guesstimated angle of 45 degrees and a 28 yard straight line distance will require an aiming distance of 19.8 yards. Remember, it doesn't matter if the angle is up or down, the answer is still the same.

Straight Line Distance (yards)

Angle (degrees)

With a straight line 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)
Straight Line Distance in yards	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