Spine charts

Use manufacturer-advertised bow speed to reference the correct chart.

Arctos - Compound

310-325fps

Arctos compound spine chart based on 310-325fps IBO/ATA ADVERTISED SPEED 310-325fps
*Data on spine chart only accurate when using RND's Custom 30gr insert and a 100gr point. **For every 25gr beyond 100gr screwed into an RND Custom 30gr insert, add 5 lbs to the draw weight when referencing the chart.

330-340fps

Arctos compound spine chart based on 330-340fps IBO/ATA ADVERTISED SPEED 330-340fps
*Data on spine chart only accurate when using RND's Custom 30gr insert and a 100gr point. **For every 25gr beyond 100gr screwed into an RND Custom 30gr insert, add 5 lbs to the draw weight when referencing the chart.

350-370fps

Arctos compound spine chart based on 350-370fps IBO/ATA ADVERTISED SPEED 350-370fps
*Data on spine chart only accurate when using RND's Custom 30gr insert and a 100gr point. **For every 25gr beyond 100gr screwed into an RND Custom 30gr insert, add 5 lbs to the draw weight when referencing the chart.