How to Sight In a Crossbow: A Step-by-Step Guide

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Sighting in (also called zeroing) is how you get your crossbow and scope to agree, so your bolt hits exactly where the crosshair points. It sounds technical, but it is genuinely simple once you know the steps. Follow this guide and you will have a dialed-in, dead-on crossbow in one short range session.

In this guide

• What you will need
• Step-by-step: how to sight in
• Understanding scope adjustments
• Confirming multiple distances
• Mistakes to avoid
• FAQ
• Quick checklist

What you will need

• Your crossbow, cocked safely with a cocking aid
• Several identical bolts with matching field points
• A sturdy crossbow-rated target
• A steady rest (bench, bipod, or sandbag)
• Your scope adjustment tool (often just your fingers or a coin)

Step-by-step: how to sight in your crossbow

1. Set up safely. Place your target 10 yards away on a safe backstop. Use a steady rest so your aim is rock-solid.
2. Get on paper. Aim at the bullseye using the top (20-yard) reticle and fire one careful shot. At 10 yards you just want to see where it lands.
3. Move to 20 yards. Fire a group of three bolts at the bullseye, aiming the same way each time.
4. Adjust the scope. Move your point of impact toward the bullseye using the windage (left/right) and elevation (up/down) dials. Chase the group, not one shot.
5. Repeat until centered. Shoot another group, adjust, and repeat until your 20-yard group sits on the bullseye.
6. Confirm farther out. Check 30 and 40 yards using the matching reticle marks, making small tweaks if needed.

Understanding scope adjustments

Crossbow scopes adjust in two directions: windage (left and right) and elevation (up and down). The dials are usually marked with arrows showing which way to turn to move your impact. The golden rule: move the adjustment toward where you want the bolt to go. If your group is low and left, move impact up and right.

Confirming multiple distances

Most crossbow scopes have several reticle lines, each for a different distance. Once your top line is dead-on at 20 yards, shoot the next line at 30 and 40 yards to confirm they match. Small differences are normal; note your exact hold points so you know them by heart in the field.

Mistakes to avoid

FAQ

How many bolts do I need to sight in?

A dozen is plenty for most sessions. Shoot in groups of three and adjust between groups.

What distance should I zero my crossbow?

Zero the top reticle at 20 yards, then confirm 30 and 40 yards with the matching lines.

Why do my bolts keep hitting low?

Usually the elevation needs adjusting up, or you are shooting a heavier bolt than the scope expects. Adjust elevation and confirm your bolt weight.

Do I need to re-sight after switching to broadheads?

Yes. Always confirm your zero with broadheads before hunting, as they can fly slightly differently than field points.

Quick checklist ✅

1. Use identical bolts and a steady rest
2. Get on paper at 10 yards
3. Zero the top reticle at 20 yards using groups
4. Adjust toward the bullseye between groups
5. Confirm 30 and 40 yards
6. Re-check zero after any change (especially broadheads)

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