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Arrow Weight Charts
The IBO Chart (International Bowhunting
Organization)
IBO
STANDARD: Minimum Allowable Arrow Weight
-
Includes Tip Weight |
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80# Bow
|
400 gr min.
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64# Bow
|
320 gr min.
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48# Bow
|
240 gr min.
|
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78# Bow
|
390 gr min.
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62# Bow
|
310 gr min.
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46# Bow
|
230 gr min.
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76# Bow
|
380 gr min
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60# Bow
|
300 gr min.
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44# Bow
|
220 gr min.
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74# Bow
|
370 gr min.
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58# Bow
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290 gr min.
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42# Bow
|
210 gr min.
|
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72# Bow
|
360 gr min.
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56# Bow
|
280 gr min.
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40# Bow
|
200 gr min.
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70# Bow
|
350 gr min.
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54# Bow
|
270 gr min.
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38# Bow
|
190 gr min.
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68# Bow
|
340 gr min.
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52# Bow
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260 gr min.
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36# Bow
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180 gr min.
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66# Bow
|
330 gr min.
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50# Bow
|
250 gr min.
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34# Bow
|
170 gr min.
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The AMO chart (Archery Trade Association
{formerly the AMO})
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Using this chart
1. Select
the column that describes the type bow you shoot
2. Move down that column to locate your Actual
Peak Draw Weight
3. Move horizontally across the row to your "AMO
Draw Length" column.
4. The box at the intersection contains the minimum
total arrow weight
for your equipment
Arrow weight includes
all arrow components - shaft, insert, point, fletching,
and nock.
Ex: Given a bow
with; 28" draw length, 65# peak draw weight, & speed
cam
The minimum arrow weight
is given as 348 grains.
SE=Stored Energy, ESE=Energy Storage Efficiency, BH=Brace
Height,
PDF=Peak Draw Force
AMO
Recommended Minimum Arrow Weights (Grains)
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SE/PDF
~0.95
ESE
~62%
BH
~9.5IN.
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SE/PDF
~1.04
ESE
~66%
BH
~9.0IN.
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SE/PDF
~1.20
ESE
~71%
BH
~8.0IN.
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SE/PDF
>1.30
ESE
~75%
BH
~7.0IN.
|
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Actual
Peak Draw Weight (lbs)
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25"
|
26"
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27"
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28"
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29"
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30"
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31"
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32"
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33"
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|
<33
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<32
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<29
|
<27
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150
|
150
|
150
|
150
|
150
|
150
|
150
|
150
|
150
|
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34-41
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33-38
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30-35
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28-32
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150
|
150
|
150
|
150
|
150
|
150
|
150
|
151
|
165
|
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42-46
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39-43
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36-39
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33-36
|
150
|
150
|
150
|
150
|
150
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163
|
179
|
195
|
211
|
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47-52
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44-49
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40-44
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37-41
|
150
|
150
|
150
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167
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185
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203
|
222
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240
|
258
|
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53-58
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50-54
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45-49
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42-46
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150
|
163
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183
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203
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224
|
244
|
264
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285
|
305
|
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59-63
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55-60
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50-54
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47-50
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172
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195
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217
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240
|
262
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284
|
307
|
329
|
352
|
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64-69
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61-64
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55-59
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51-55
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202
|
227
|
251
|
276
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300
|
325
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350
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374
|
399
|
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70-75
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65-71
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60-64
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56-60
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232
|
259
|
286
|
312
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339
|
365
|
392
|
419
|
445
|
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76-81
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72-76
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65-70
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61-65
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262
|
291
|
320
|
348
|
377
|
406
|
435
|
463
|
492
|
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82-86
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77-81
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71-74
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66-69
|
292
|
323
|
354
|
385
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416
|
446
|
477
|
508
|
539
|
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87-92
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82-87
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75-79
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70-74
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322
|
355
|
388
|
421
|
454
|
487
|
520
|
553
|
586
|
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93-99
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88-94
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80-85
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75-80
|
352
|
387
|
422
|
457
|
492
|
532
|
581
|
629
|
676
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We most strongly recommend you adhere to
the IBO or AMO Standard regarding minimum arrow weight
Arrow Weight:
Is Lighter Better?
This is a hotly debated topic, but the
fact is, lighter arrows fly faster with less loss of trajectory.
A faster arrow won't necessarily penetrate better, but it
will make it to the target more quickly. Hunters need to carefully
consider their choices and consult an archery pro shop for
advice if necessary
In the current archery market, speed sells.
Archery manufacturers are under constant pressure to make
things go faster. As a result, each year brings a new bumper-crop
of even lighter arrow shafts, better string materials, more
efficient bow designs, friction-reducing components, etc.
The main idea is, lighter arrows go faster - sometimes dramatically
faster. Heavy arrows go slower. So if you want your bow to
shoot "flat", lightweight arrows are going to be
a must, but how light is too light?
Arrow Weight: How Light is TOO Light?
Shooting an arrow that is too light can
be dangerous, both to you and your expensive compound bow.
Shooting an underweight arrow has a similar effect as dry-firing
your bow. Without sufficient arrow weight, the string and
limbs of your compound bow move too quickly and violently.
The bow needs the resistance of the arrow to stay intact.
Naturally, an underweight arrow will fly
like a rocket - generating unbelievable speeds. But anyone
who does this is just asking for trouble. Modern compound
bows aren't toys. They generate a tremendous amount of energy
and should be treated with the same respect you would give
any dangerous weapon. The vast majority of serious compound
bow failures are not caused by manufacturer defects, but rather
by dry-firing the bow or shooting dramatically underweight
arrows. For your personal safety, and the longevity of your
bow, we most strongly recommend you follow the IBO or AMO
Standard regarding minimum arrow weight.
The International Bowhunting Organization
(IBO) sets a 5 grains per pound standard. In other words,
arrow weight should never be less than 5X the bow's draw weight.
So a 60# bow should shoot no less than a 300 (5 x 60) grain
arrow. Simple enough!
Another authority in the archery industry,
the Archery Trade Association (formerly the AMO), also publishes
an arrow weight recommendation chart. The AMO chart is a bit
more complex and takes more variables into account (brace
height, bow efficiency, cam design, draw length, etc.), but
it is less widely used.
Some manufacturers ask you follow one standard,
some the other. And depending upon your particular bow setup,
the IBO and AMO recommendations may or may not be the same.
Check the literature that came with your bow to find which
standard you should follow.
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