Bore sighting is a crucial first step in the process of zeroing a rifle. It allows you to get your scope roughly aligned with the barrel, significantly reducing the time and ammunition needed for precise zeroing at the range. This process helps you get on target quickly, saving you time and frustration. Understanding how to bore sight accurately is essential for every rifle owner, regardless of experience level. This guide will walk you through the process step-by-step.
Understanding Bore Sighting
Before we dive into the how-to, let's clarify what bore sighting actually entails. Bore sighting involves aligning your rifle scope with the barrel's bore (the inside of the barrel). This is done without actually firing the rifle. Instead, you use a bore sighting tool to visually align the scope's crosshairs with the barrel's path of fire. Think of it as a preliminary aiming adjustment that gets you close, before fine-tuning at the range.
Why Bore Sight?
- Saves Ammunition: By getting your scope close to zeroed beforehand, you'll save considerable time and ammunition during your zeroing process at the range. Instead of wasting numerous rounds trying to find your target, you'll already be close.
- Reduces Range Time: Quick bore sighting significantly shortens the amount of time spent at the shooting range, allowing you to spend more time practicing and less time adjusting your scope.
- Improves Accuracy: While bore sighting doesn't replace proper zeroing, it's an essential step toward achieving consistent accuracy. It establishes a good foundation for precise adjustments.
- Essential for New Scopes: For newly mounted scopes, bore sighting is almost mandatory to ensure a safe and efficient zeroing process.
Methods of Bore Sighting
There are two primary methods for bore sighting: using a bore sighting tool and using a laser bore sight.
1. Using a Bore Sighting Tool
A bore sighting tool is a device that inserts into the rifle's barrel. It has an aperture (a small opening) at one end that you look through, and markings that allow you to align it with your scope's crosshairs.
Step-by-Step Instructions:
- Ensure Safety: Always unload and verify your rifle is unloaded before attempting any procedure.
- Select the Correct Tool: Choose a bore sighting tool specifically designed for your rifle's caliber. Using the wrong tool can damage your firearm.
- Insert the Tool: Carefully insert the bore sighting tool into the rifle's barrel from the breech (rear) end.
- Align with the Target: Position yourself at a safe distance from a target (a wall or a backstop is perfect). Look through the aperture of the bore sighting tool.
- Adjust the Scope: Adjust your rifle scope's windage and elevation knobs until the target is centered in the bore sighting tool's aperture.
- Remove the Tool: Carefully remove the bore sighting tool.
2. Using a Laser Bore Sighter
Laser bore sighters are more convenient, especially for those with multiple firearms. These devices project a laser beam through the barrel, allowing you to see the point of impact on your target.
Step-by-Step Instructions:
- Safety First: Again, ensure your rifle is unloaded.
- Insert the Laser: Carefully insert the laser bore sighter into the barrel.
- Power On: Activate the laser.
- Mark the Point of Impact: Observe the laser point of impact on your target.
- Adjust the Scope: Adjust your scope's windage and elevation knobs until the crosshairs align with the laser point.
- Remove the Laser: Carefully remove the laser bore sighter.
Important Considerations
- Proper Mounting: Ensure your scope is securely mounted to your rifle before bore sighting. A loose scope will lead to inaccurate results.
- Target Distance: For both methods, a distance of at least 25 yards is recommended for accurate results.
- Eye Relief: Maintain proper eye relief while looking through your scope or bore sighting tool to avoid injury.
- Environmental Factors: Wind, temperature, and light conditions can affect your bore sighting.
Fine-Tuning at the Range
Remember that bore sighting only provides a rough alignment. You will still need to fine-tune your scope's adjustments at the shooting range using live ammunition. This process, known as zeroing, involves making precise adjustments to ensure your shots consistently hit your target at different distances.
Conclusion
Bore sighting is a valuable skill for every rifle owner. By following the steps outlined in this guide, you can significantly reduce the time and ammunition required to zero your rifle scope. Remember to always prioritize safety, and enjoy the improved accuracy that precise bore sighting provides!