Bare shaft tuning for recurve and barebow

Prepare matched arrows and a basic bow setup

A bare shaft has its point and nock but no feathers or vanes. Because it lacks their stabilizing effect, its impact can make a launch mismatch easier to see. Use more than one bare shaft so a damaged or unusual arrow cannot dictate the whole tuning decision.

Match shaft model, length, point components and nock fit to the fletched arrows. Inspect every shaft before shooting, especially after removing fletching. Do not scrape or cut into the shaft surface. A shop can prepare suitable test arrows if you are unsure how to remove the vanes safely.

Start with the bow maker's recommended brace height, the resting distance between the string and the grip's deepest point, and basic limb alignment. Check the rest and plunger, the spring-loaded button that supports the arrow from the side. Set a sensible initial nocking height and verify fletching clearance before interpreting separation as a spine problem.

Start close enough to see a consistent difference

Choose a close distance with a large backstop. Bare shafts can land well away from fletched arrows on an untuned setup, so begin closer than your usual practice distance if necessary. Extend the test only when both kinds of arrow land safely and your fletched group is small enough to show a real difference.

1. Shoot several matched fletched arrows with your normal anchor and aiming method.
2. Shoot the bare shafts at the same point without changing the sight, anchor or crawl.
3. Record the center of the fletched group and where each bare shaft landed.
4. Repeat the sequence over several ends before touching the bow settings.

Judge where the shafts enter the target. Their angle after impact can be distorted by target material or an old hole. If you visibly mishandle a shot, record it and repeat the test; do not quietly delete every inconvenient bare-shaft result.

A combined arrow plot helps you see consistent separation across ends. Identify which impacts belong to bare shafts in your notes. If all the arrows scatter widely, move closer or work on execution before trying to tune a difference smaller than your normal spread.

Resolve high and low impacts first

Bare shafts consistently below the fletched group can indicate that the nocking point is too high. A small downward adjustment is a starting test. Bare shafts above the group can indicate a low nocking point, so test a small upward change.

Repeat the same shooting sequence after each change. Stay within a sensible setup range and check clearance again if the response is erratic. An arrow bouncing against the rest or bow can create a misleading impact pattern, and lowering a nocking point too far may make contact worse.

Measure the original position with a bow square, a graduated T-shaped tool that clips to the string. Move only the nocking position during this stage. If you change plunger tension at the same time, a diagonal separation becomes difficult to interpret because both adjustments may affect the result.

Read left and right for your shooting hand

A stiff or weak reaction describes how the arrow behaves in your complete setup. The arrow spine number describes the shaft's measured stiffness, but draw weight, arrow length and point mass also affect the shot. Bare-shaft separation does not directly measure a spine number.

For a small stiff indication, reducing plunger spring tension can be a useful trial. For a small weak indication, increasing it can help. Preserve the plunger's lateral position while testing spring tension, and record turns or clicks so you can return to the start. Large adjustments that leave the spring nearly bottomed out or barely engaged call for a setup review.

Know when the arrow specification needs attention

A heavier point generally makes an arrow react weaker; a lighter point generally makes it react stiffer. More draw weight also tends to produce a weaker reaction, and less draw weight a stiffer one. These changes have other consequences, so check the arrow maker's selection guidance before using them to solve a large mismatch.

Keep total arrow weight above the bow manufacturer's minimum and preserve safe arrow length at full draw. Cutting a shaft is irreversible and can make it unsafe if you remove too much. Do not increase draw weight beyond what you can control just to make an unsuitable arrow behave better.

If the bare shafts remain far outside a consistent fletched group, ask a technician to assess arrow choice and clearance. A plunger has a useful adjustment range, but extreme spring settings are a poor substitute for a suitable arrow. Paper tuning can supply another launch observation, though it does not replace this impact comparison.

Keep a barebow crawl consistent during the test

For barebow string walking, the crawl is the distance between your drawing fingers and the nock. Use the crawl you intend to evaluate and leave it unchanged during the comparison. A different finger position changes the load on the bow, so results from different crawls should have separate notes. Start with a distance and crawl you can shoot consistently.

Exact overlap at one distance is a useful reference, but fletched grouping across your normal distances is the final check. Save the nocking height, plunger position and spring setting that gave the best repeatable results. Confirm those settings again with normal fletched ends before changing another component.

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