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Arrow spine by setup · bolt datasheet

What arrow spine for 60 lb draw at a 29 inch arrow

The starting spine for a 60 lb draw at a 29 inch arrow with a 125 grain point, and the weight floor.

Dry-fire warning

Crossbow bolt data and archery arrow spine, nock and thread data are quoted from each manufacturer's published figures, owner documentation and industry standards, cited on every page. A nock, spine or grain-weight mismatch can cause a dry-fire that damages the bow and can injure the shooter. Confirm against your own owner's manual and the arrow maker's own chart before shooting, and never drop below the stated minimum total weight.

For a 60 lb draw at a 29 inch arrow with a 125 grain point, start with a 340 spine (the 340-400 band), and keep the finished arrow at or above 300 grains total.
This setupmanufacturer data, cited
Draw weight60 lb
Arrow length29 in (cut, nock groove to shaft end)
Point weight125 gr
Recommended spine340 (published band 340-400)
Minimum total weight300 gr, from the 5-grains-per-pound floor
A shaft in this spine

Field notes

A 60 lb 29 inch setup with a 125 grain point steps one group stiffer than the 100 grain version, landing on 340. Heavier broadheads always demand a stiffer spine at the same draw.

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 29 inches and 60 pounds, or bare-shaft test before cutting a dozen.

Whatever spine you land on, keep the finished arrow at or above 300 grains total, the 5-grains-per-pound floor, so the bow is not shooting dangerously light.

The rules behind this pick

Sources: Nock On Archery - Arrow Spine Chart: choosing the correct spine · Easton - Hunting Arrow Size Selection chart and adjustment rules (PN 301055-A)