The IBO Chart (International Bowhunting Organization)

IBO STANDARD:  Minimum Allowable Arrow Weight  - 
Includes Tip Weight

80# Bow   

  400 gr min.

64# Bow   

  320 gr min.

48# Bow   

  240 gr min.

78# Bow   

  390 gr min.

62# Bow   

  310 gr min.

46# Bow   

  230 gr min.

76# Bow   

  380 gr min

60# Bow   

  300 gr min.

44# Bow   

  220 gr min.

74# Bow   

  370 gr min.

58# Bow   

  290 gr min.

42# Bow   

  210 gr min.

72# Bow   

  360 gr min.

56# Bow   

  280 gr min.

40# Bow   

  200 gr min.

70# Bow   

  350 gr min.

54# Bow   

  270 gr min.

38# Bow   

  190 gr min.

68# Bow   

  340 gr min.

52# Bow   

  260 gr min.

36# Bow   

  180 gr min.

66# Bow   

  330 gr min.

50# Bow   

  250 gr min.

34# Bow   

  170 gr min.

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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)

SE/PDF
~0.95

ESE
~62%

BH
~9.5IN.

SE/PDF
~1.04

ESE
~66%

BH
~9.0IN.

SE/PDF
~1.20

ESE
~71%

BH
~8.0IN.

SE/PDF
>1.30

ESE
~75%

BH
~7.0IN.

Actual Peak Draw Weight (lbs)

25"

26"

27"

28"

29"

30"

31"

32"

33"

<33

<32

<29

<27

150

150

150

150

150

150

150

150

150

34-41

33-38

30-35

28-32

150

150

150

150

150

150

150

151

165

42-46

39-43

36-39

33-36

150

150

150

150

150

163

179

195

211

47-52

44-49

40-44

37-41

150

150

150

167

185

203

222

240

258

53-58

50-54

45-49

42-46

150

163

183

203

224

244

264

285

305

59-63

55-60

50-54

47-50

172

195

217

240

262

284

307

329

352

64-69

61-64

55-59

51-55

202

227

251

276

300

325

350

374

399

70-75

65-71

60-64

56-60

232

259

286

312

339

365

392

419

445

76-81

72-76

65-70

61-65

262

291

320

348

377

406

435

463

492

82-86

77-81

71-74

66-69

292

323

354

385

416

446

477

508

539

87-92

82-87

75-79

70-74

322

355

388

421

454

487

520

553

586

93-99

88-94

80-85

75-80

352

387

422

457

492

532

581

629

676

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 cons