Arrow Spine Chart
Arrow spine is the arrow shaft’s stiffness. The right spine depends on draw weight, arrow length, point weight, bow type, and the shaft manufacturer’s chart. A spine chart gives a starting point, not a final tune. If you are unsure, use the arrow maker’s chart or ask a bow shop before cutting arrows.
Quick answer
Arrow spine is the shaft’s resistance to bending. In common carbon-arrow labeling, a lower number usually means a stiffer shaft and a higher number usually means a more flexible shaft. That pattern is useful, but the exact recommendation still depends on the specific shaft model and the manufacturer’s chart.
What arrow spine means
Static spine is the basic stiffness rating of the bare shaft. Dynamic spine is how that shaft behaves once you add real-world variables such as point weight, arrow length, bow speed, cam feel, and release style. A shaft that looks right on paper can still react differently once it is cut and tuned.
Why arrow spine matters
- It affects arrow flight and grouping.
- It affects tuning and broadhead flight.
- It affects consistency shot to shot.
- It helps you avoid obviously mismatched shafts.
- It matters for safety and durability when the bow is fast or the setup is heavy on the point end.
Main factors that affect spine choice
- Draw weight
- Arrow length
- Point or broadhead weight
- Compound vs recurve or traditional bow
- Release aid vs fingers
- Cam aggressiveness on compound bows
- The shaft manufacturer’s model and chart
Simple starting chart explanation
Use the table below as a directional guide only. It is not a universal buying chart. Always confirm the final recommendation with the shaft maker’s chart for the exact model you want to buy.
| Bow setup factor | Effect on spine need | What it usually means |
|---|---|---|
| Higher draw weight | Usually needs stiffer spine | The shaft has to resist more force. |
| Longer arrow | Usually needs stiffer spine | Longer shafts tend to act weaker. |
| Heavier point | Usually needs stiffer spine | More front weight can increase dynamic flex. |
| Shorter arrow | Usually acts stiffer | Cutting shorter reduces flex in the finished shaft. |
| Lower draw weight | Usually allows weaker spine | The arrow does not have to resist as much load. |
| Finger release | May need different tuning than a release aid | Finger shooters often need a different starting point. |
How to use a manufacturer spine chart
- Confirm your bow type.
- Confirm your actual draw weight.
- Confirm arrow length.
- Confirm point or broadhead weight.
- Find the shaft model’s chart.
- Choose the recommended starting spine.
- Test tune before buying or cutting a large batch.
Arrow length and spine
Arrow length changes spine behavior. Cutting an arrow shorter makes it act stiffer. Leaving it longer makes it act weaker. That is why arrow length and spine should be checked together, not separately. Review How to Determine Arrow Length and the Arrow Length Calculator before you cut shafts. If point weight or front balance is changing too, compare the Arrow Weight Calculator and Arrow FOC Calculator before you buy or cut more shafts.
Common mistakes
- Using draw length instead of actual arrow length
- Ignoring point weight
- Copying another archer’s arrows without checking the chart
- Buying arrows before checking the shaft maker’s recommendation
- Cutting all shafts before test tuning
- Assuming every brand uses the same chart
- Using a hunting broadhead without checking flight
Beginner recommendation
Start with draw length and safe arrow length, then use the manufacturer chart to choose spine. If you are unsure, buy a small set first or ask a bow shop to check the setup before you cut a full batch. Do not cut shafts too short just to force a stiffer reaction.
Related arrow setup links
These pages keep the rest of the arrow setup path in one place.
Frequently asked questions
Short answers for common spine questions.
What does arrow spine mean?
It is the stiffness rating of the shaft. In common carbon-arrow labeling, a lower number usually means a stiffer arrow.
Is 300 spine stiffer than 400 spine?
Usually yes for common carbon-arrow labels, but always confirm the exact shaft model because brand charts can differ.
Does arrow length affect spine?
Yes. A shorter arrow acts stiffer and a longer arrow acts weaker.
Does point weight affect arrow spine?
Yes. Heavier point weight usually pushes the dynamic spine in the weaker direction.
What arrow spine should beginners use?
Beginners should start with the manufacturer’s chart, a safe arrow length, and a shop check if the setup is unfamiliar.
Can I use the same spine for compound and recurve?
Sometimes, but not as a default. Compound and recurve setups often need different spine choices and different tuning checks.
Do I need to check the manufacturer’s spine chart?
Yes. The shaft chart is the safest starting point before you buy or cut arrows.
References
These references support the spine and shaft-selection guidance used here.
- Easton: Spine Considerations for Bowhunters
- Easton Target & Hunting Arrow Selector
- Gold Tip Spine Selector
- Black Eagle Arrows Spine Chart
- Victory Archery Arrow Guide