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HOW TO FIND THE RIGHT SPINE FOR YOU
Our Spine Selection Charts are a great starting point, BUT it is only a reference point, not guaranteed to be an EXACT
match for your bow. Test kits are highly recommended.
• STEP 1: Find your Arrow Length and Draw Length.
The Correct Arrow Length is best determined by drawing back an extra-long arrow (draw check arrow below)
to full draw and having someone mark the arrow right in front of the handle. Measure the arrow from the
mark to the valley (deepest part) of the nock groove. This is your DRAW Length. For ARROW length we
recommend adding 1 or 2 inches to this measurement so your broadhead will not bump the bow shelf. For
target archery this is not as important, but be sure to leave enough arrow so it does not come off the inside
of the bow shelf.
• STEP 2: Determining Actual Peak Bow Weight
This is measured at your draw length, not by what the bow has written on it. The reason is a bow will be
roughly 2-3# different for every inch +/- the rated draw length. Even if you draw at your bow's rated draw
(normally 28") the industry standard allows a bow manufacturer to be ±2# from rated bow weight and still
mark/sell at the rated weight. So your marked 45# @ 28" bow could actually be 47# @ 28". Using an accurate
scale, see page 52, draw the string until you hit your draw length and hold. Observe the weight on the scale.
Repeat as you see fit.

Finding Your Arrow Length

1" clearance
Draw Length
(minimum)

Mark arrow here

Valley
Back of bow of nock
(far side) Belly of bow (face side) groove

Arrow Selection Chart

Once you have your Arrow Length and Actual Bow Peak Weight, you are ready to select your correct arrow
spine. Find your bow type and bow weight along with the point weight you plan to use. Most common is
125 grains. Now move across the chart until you find your arrow length. Note: The 1/2" marks over lap on
the chart, if you are on two different spines we highly recommend getting a test kit first. Remember, these
are only recommendations, the final decision is up to you.

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Spine Charts: +5 for Fast Flight® bow strings
RECURVE /CENTER SHOT LONGBOW LONGBOW / SELF BOW
Finger Release
ACTUAL PEAK BOW WEIGHT - Lbs.
Carbon Arrow Length Finger Release
ACTUAL PEAK BOW WEIGHT - Lbs.
Point Weight Sizing refers to Easton spines Point Weight
22½ 23½ 24½ 25½ 26½ 27½ 28½ 29½ 30½ 31½
100 125 150 175 200 23" 24" 25" 26" 27" 28" 29" 30" 31" 32" 100 125 150 175 200
(grains) (grains) (grains) (grains) (grains) (grains) (grains) (grains) (grains) (grains)
23½ 24½ 25½ 26½ 27½ 28½ 29½ 30½ 31½ 32½

700 700 700 600 600 600 500 500 38-43 35-40 32-37 29-34 26-31
700 700 700 600 600 600 500 500 500 44-49 41-46 38-43 35-40 32-37
32-36 29-33 26-30 23-27 20-24 700 700 700 600 600 600 500 500 500 400 50-55 47-52 44-49 41-46 38-43
37-41 34-38 31-35 28-32 25-29 700 700 600 600 600 500 500 500 400 400 56-61 53-58 50-55 47-52 44-49
42-46 39-43 36-40 33-37 30-34 700 600 600 600 500 500 500 400 400 400 62-67 59-64 56-61 53-58 50-55
47-51 44-48 41-45 38-42 35-39 600 600 600 500 500 500 400 400 400 340 68-73 65-70 62-67 59-64 56-61
52-56 49-53 46-50 43-47 40-44 600 600 500 500 500 400 400 400 340 340 74-79 71-76 68-73 65-69 62-67
57-61 54-58 51-55 48-52 45-49 600 500 500 500 400 400 400 340 340 300 80-85 77-82 74-79 70-75 68-73
62-66 59-63 56-60 53-57 50-54 500 500 500 400 400 400 340 340 300 300 86-91 83-88 80-85 76-81 74-79
67-71 64-69 61-65 58-62 55-59 500 500 400 400 400 340 340 300 300 300 92-97 89-94 86-91 82-87 80-85
72-76 70-75 66-70 63-67 60-64 500 400 400 400 340 340 300 300 300 300 98-103 95-100 92-97 88-93 86-91
77-81 76-81 71-75 68-72 65-69 400 400 400 340 340 300 300 300 300 300 104-109 101-106 98-103 94-99 92-97
82-86 82-87 76-80 73-77 70-74 400 400 340 340 300 300 300 300 300 300 110-115 107-112 104-109 100-105 98-103
87-91 88-93 81-85 78-82 75-79 400 340 340 300 300 300 300 300 300 116-121 113-118 110-115 106-111 104-109

RECURVE/CENTER SHOT LONGBOW LONGBOW / SELF BOW

Finger Release Finger Release
ACTUAL PEAK BOW WEIGHT - Lbs. Aluminium Arrow Length ACTUAL PEAK BOW WEIGHT - Lbs.
Point Weight Point Weight
22½ 23½ 24½ 25½ 26½ 27½ 28½ 29½ 30½ 31½
100 125 145 160 190 23" 24" 25" 26" 27" 28" 29" 30" 31" 32" 100 125 145 160 190
(grains) (grains) (grains) (grains) (grains) (grains) (grains) (grains) (grains) (grains)
23½ 24½ 25½ 26½ 27½ 28½ 29½ 30½ 31½ 32½

31-35 26-30 21-25 16-20 A A B C-D C-D

36-40 31-35 26-30 21-25 16-20 A A B C-D C-D E 41-45 36-40 31-35 26-30
41-45 36-40 31-35 26-30 21-25 A A B C-D C-D E E-F 46-50 41-45 36-40 31-35 26-30
46-50 41-45 36-40 31-35 26-30 A A B C-D C-D E E-F E-H 51-55 46-50 41-45 36-40 31-35
51-55 46-50 41-45 36-40 31-35 A A B C-D C-D E E-F E-H H-I 56-60 51-55 46-50 41-45 36-40
56-60 51-55 46-50 41-45 36-40 A A B C-D C-D E E-F E-H H-I G-I 61-65 56-60 51-55 46-50 41-45
61-65 56-60 51-55 46-50 41-45 A B C-D C-D E E-F E-H H-I G-I J-L-O 66-70 61-65 56-60 51-55 46-50
66-70 61-65 56-60 51-55 46-50 B C-D C-D E E-F E-H H-I G-I J-L-O K-L-O 71-75 66-70 61-65 56-60 51-55
71-75 66-70 61-65 56-60 51-55 C-D C-D E E-F E-H H-I G-I J-L-O K-L-O M 76-80 71-75 66-70 61-65 56-60
76-80 71-75 66-70 61-65 56-60 C-D E E-F E-H H-I G-I J-L-O K-L-O M N 81-85 76-80 71-75 66-70 61-65
81-85 76-80 71-75 66-70 61-65 E E-F E-H H-I G-I J-L-O K-L-O M N N 86-90 81-85 76-80 71-75 66-70
86-90 81-85 76-80 71-75 65-70 E-F E-H H-I G-I J-L-O K-L-O M N N N 91-95 86-90 81-85 76-80 71-75
1716 = A 1816 = B 1916 = C 2013 = D 2016 = E 2018 = F 2117 = G 2213 = H 2215 = I 2216 = J 2219 = K 2314 = L 2315 = M 2317 = N 2413 = O

RECURVE/CENTER SHOT LONGBOW LONGBOW / SELF BOW

Finger Release Finger Release
ACTUAL PEAK BOW WEIGHT - Lbs. Wood Arrow Length ACTUAL PEAK BOW WEIGHT - Lbs.
Point Weight Point Weight
22½ 23½ 24½ 25½ 26½ 27½ 28½ 29½ 30½ 31½
100 125 145 160 190 23" 24" 25" 26" 27" 28" 29" 30" 31" 32" 100 125 145 160 190
(grains) (grains) (grains) (grains) (grains) (grains) (grains) (grains) (grains) (grains)
23½ 24½ 25½ 26½ 27½ 28½ 29½ 30½ 31½ 32½

31-35 26-30 21-25 16-20 30-35 35-40 40-45 45-50

36-40 31-35 26-30 21-25 16-20 30-35 35-40 40-45 45-50 50-55 41-45 36-40 31-35 26-30
41-45 36-40 31-35 26-30 21-25 30-35 35-40 40-45 45-50 50-55 55-60 46-50 41-45 36-40 31-35 26-30
46-50 41-45 36-40 31-35 26-30 30-35 35-40 40-45 45-50 50-55 55-60 60-65 51-55 46-50 41-45 36-40 31-35
51-55 46-50 41-45 36-40 31-35 30-35 35-40 40-45 45-50 50-55 55-60 60-65 65-70 56-60 51-55 46-50 41-45 36-40
56-60 51-55 46-50 41-45 36-40 30-35 35-40 40-45 45-50 50-55 55-60 60-65 65-70 70-75 61-65 56-60 51-55 46-50 41-45
61-65 56-60 51-55 46-50 41-45 30-35 35-40 40-45 45-50 50-55 55-60 60-65 65-70 70-75 75-80 66-70 61-65 56-60 51-55 46-50
66-70 61-65 56-60 51-55 46-50 35-40 40-45 45-50 50-55 55-60 60-65 65-70 70-75 75-80 80-85 71-75 66-70 61-65 56-60 51-55
71-75 66-70 61-65 56-60 51-55 40-45 45-50 50-55 55-60 60-65 65-70 70-75 75-80 80-85 85-90 76-80 71-75 66-70 61-65 56-60
76-80 71-75 66-70 61-65 56-60 45-50 50-55 55-60 60-65 65-70 70-75 75-80 80-85 85-90 90-95 81-85 76-80 71-75 66-70 61-65
81-85 76-80 71-75 66-70 61-65 50-55 55-60 60-65 65-70 70-75 75-80 80-85 85-90 90-95 95-100 86-90 81-85 76-80 71-75 66-70
86-90 81-85 76-80 71-75 65-70 55-60 60-65 65-70 70-75 75-80 80-85 85-90 90-95 95-100 100+ 91-95 86-90 81-85 76-80 71-75

-- SEE Test Kits listed with arrows/shafting descriptions --