# Arrow Weight Chart by Spine

> Finished arrow weight chart by spine size, with a grains-per-pound check for common draw weights. Estimate total arrow weight before buying shafts.

Canonical page: https://archeryprotools.com/calculators/arrow-weight-chart-by-spine (the interactive calculator runs on that page)

Finished arrow weight by spine at typical hunting lengths. Includes a GPP check for each weight class, so you can quickly see whether your build is light, mid, heavy, or ultra-heavy for your draw weight.

## 📊 Finished Arrow Weight by Spine

Assumes a 29 in arrow with 100 gr point, 25 gr insert, and 30 gr rear components. Actual weight varies with shaft GPI, insert material, vane style, and point weight.

| Spine | Common Shaft GPI Range | Finished Weight (approx.) | Class | Typical Use |
| --- | --- | --- | --- | --- |
| 200 | 11–13 gpi | 475–530 gr | Ultra Heavy | Dangerous game / heavy hunting |
| 250 | 10–12 gpi | 450–500 gr | Heavy | Large game / high-FOC hunting |
| 300 | 9–11 gpi | 425–475 gr | Heavy | Elk, bear, heavy-hunting |
| 340 | 8.5–10 gpi | 410–450 gr | Mid-Heavy | All-around hunting |
| 400 | 7.5–9 gpi | 390–425 gr | Mid | Deer / mid-weight hunting |
| 500 | 6.5–8 gpi | 360–400 gr | Light | Target / light hunting |
| 600 | 5.5–7 gpi | 340–370 gr | Light | Youth / target / 3D |

**Weight class is not universal.** A 425-grain arrow is heavy on a 40 lb youth bow and light on an 80 lb hunting bow. What matters is the relationship to your draw weight (GPP) and your target game.

## ⚖️ GPP Check by Draw Weight

Grains per pound (GPP) is finished arrow weight divided by draw weight. Common hunting ranges are 6–8 GPP for standard setups and 8+ GPP for heavy penetration builds.

| Arrow Weight | 40 lb bow | 50 lb bow | 60 lb bow | 70 lb bow |
| --- | --- | --- | --- | --- |
| 350 gr | 8.8 GPP | 7.0 GPP | 5.8 GPP | 5.0 GPP |
| 400 gr | 10.0 GPP | 8.0 GPP | 6.7 GPP | 5.7 GPP |
| 425 gr | 10.6 GPP | 8.5 GPP | 7.1 GPP | 6.1 GPP |
| 450 gr | 11.3 GPP | 9.0 GPP | 7.5 GPP | 6.4 GPP |
| 500 gr | 12.5 GPP | 10.0 GPP | 8.3 GPP | 7.1 GPP |
| 550 gr | 13.8 GPP | 11.0 GPP | 9.2 GPP | 7.9 GPP |
| 600 gr | 15.0 GPP | 12.0 GPP | 10.0 GPP | 8.6 GPP |

GPP is a comparison tool, not a rule. Modern crossbows and speed-focused bows may run lower than 6 GPP safely; heavier builds commonly sit above 8.

## ❓ Frequently Asked Questions

**How much does a typical hunting arrow weigh?**

Most modern compound hunting arrows land between **400 and 500 grains** finished. Heavy-hunting / large-game builds run 500–650 grains. Target and 3D arrows are often 300–380 grains.

**Does arrow weight depend on spine?**

Yes, indirectly. Stiffer spine shafts (200, 250, 300) are usually built with thicker walls and heavier GPI. Weaker spine shafts (500, 600) are thinner-walled and lighter. So spine selection largely determines the weight class you land in.

**Is a 500 grain arrow too heavy for deer?**

No — 500 grains is a very common deer arrow weight, especially for shooters who value quiet bows and good momentum. It typically produces 55–70 ft-lbs of KE at hunting speeds with a 60–70 lb bow.

**What is the lightest safe arrow for my bow?**

Most manufacturers recommend a minimum of **5 grains per pound of draw weight** to protect limbs. Below this, limbs can be damaged by dry-fire-like stress. Stay at 6 GPP or higher for safety margin.

**Can I shoot heavier than my spine allows?**

Heavier arrows do not require stiffer spines — point weight and insert weight do. A heavy shaft at the same spine tunes normally. Adding heavy front components (200 gr point + 100 gr insert) is what shifts the tune.

**How do I estimate arrow weight for a build I haven't made yet?**

Use our [arrow weight calculator](https://archeryprotools.com/calculators/arrow-weight-calculator) to input shaft GPI, length, and each component. It returns total grains plus GPP.

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