Arrow spine for a 55 lb compound at a 27 inch arrow with a 100 grain point: a 500 spine (band 400-500), plus the 275 grain minimum weight. Sourced.
Updated 05 September 2026.
What arrow spine for 55 lb draw at a 27 inch arrow
The starting spine for a 55 lb draw at a 27 inch arrow with a 100 grain point, and the weight floor.
| Draw weight | 55 lb |
|---|---|
| Arrow length | 27 in (cut, nock groove to shaft end) |
| Point weight | 100 gr |
| Recommended spine | 500 (published band 400-500) |
| Minimum total weight | 275 gr, from the 5-grains-per-pound floor |
Easton 5mm Axis carbon arrow shaft (500 spine)
Shop Easton 5mm Axis carbon arrow shaft (500 spine) on AmazonaffiliateFind Easton 5mm Axis carbon arrow shaft (500 spine) on eBayaffiliateField notes
A 55 lb draw at a short 27 inch arrow flexes less than a 28 inch cut, dropping it out of the 400 band to the stiff end of a 500. Short arrows lower the spine number you need at a given weight.
Spine is a starting point, not a guarantee, because a 340 from one brand can differ from another. Confirm on your arrow maker's chart at 27 inches and 55 pounds, or bare-shaft test before cutting a dozen.
Whatever spine you land on, keep the finished arrow at or above 275 grains total, the 5-grains-per-pound floor, so the bow is not shooting dangerously light.
The rules behind this pick
Questions and answers
What arrow spine for 55 lb draw at a 27 inch arrow?
For a 55 lb draw at a 27 inch arrow with a 100 grain point, start with a 500 spine (the 400-500 band), and keep the finished arrow at or above 275 grains total.