Boresighting a weapon with a laser is a crucial step in ensuring accurate shot placement, especially at longer ranges. This process aligns the weapon's sights with the laser's point of impact, minimizing discrepancies between where you aim and where the projectile lands. While seemingly simple, proper boresighting requires precision and attention to detail. This guide will walk you through the process, covering different methods and important considerations.
Understanding Boresighting
Before we delve into the how-to, let's clarify what boresighting entails. It's the process of aligning the barrel of your firearm (the "bore") with the aiming point of your sighting system (e.g., iron sights, red dot sight, scope). A laser boresighting device simulates the path of the projectile, allowing for precise alignment without expending ammunition. This is particularly useful for initial setup or after making significant modifications to your weapon.
Equipment Needed
To successfully boresight your weapon, you'll need the following:
- Laser Boresight: This is the core component. Choose a boresight specifically designed for your firearm's caliber. Improperly sized boresights can damage your weapon.
- Weapon to be Boresighted: Ensure your firearm is unloaded and safe before beginning.
- Target: A suitable target at a known distance (ideally 25 yards or more). The target should have clearly defined aiming points.
- Measuring Tools: A ruler or tape measure is helpful for fine-tuning adjustments.
- Appropriate Tools for Weapon Adjustments: This will depend on your firearm's sighting system; you might need screwdrivers, wrenches, or specialized tools.
- Safe Shooting Environment: Always practice safe firearm handling procedures.
Boresighting Methods and Steps
There are two primary methods for boresighting: using a bench rest and using a clamped setup.
Method 1: Bench Rest Boresighting
This method offers stability and precision, making it ideal for achieving the most accurate alignment.
- Prepare Your Setup: Securely mount your firearm in a bench rest, ensuring it's stable and level. The firearm should be pointed towards your target.
- Insert the Laser Boresight: Carefully insert the laser boresight into the barrel of your unloaded weapon. Ensure a snug and secure fit.
- Adjust the Target Distance: Position your target at a suitable distance (at least 25 yards).
- Adjust for Windage and Elevation: Turn on the laser boresight. Observe the laser's point of impact on the target. Use the weapon's adjustment mechanisms (usually windage and elevation screws on the sighting system) to center the laser point on your target's aiming point. Make small adjustments and re-check until the laser is precisely aligned.
- Verify Alignment: Once satisfied, remove the laser boresight and visually inspect the alignment through your weapon's sights. This step helps ensure the laser boresight hasn't introduced any error.
Method 2: Clamped Boresighting
This method is suitable for situations where a bench rest isn't readily available.
- Secure Your Weapon: Clamp your weapon securely in a vice or other clamping device, ensuring it's stable and aimed towards your target.
- Follow Steps 2-5 from the Bench Rest Method: The process remains the same, utilizing the clamping device to provide stability.
Important Considerations:
- Caliber Compatibility: Always use a laser boresight specifically designed for your firearm's caliber.
- Zeroing After Boresighting: Boresighting only provides a close approximation. You'll still need to perform a proper zeroing procedure at the range with live ammunition to fine-tune the accuracy.
- Safety First: Always handle firearms safely. Treat every weapon as if it were loaded.
Conclusion
Boresighting your firearm with a laser provides a significant advantage in achieving accurate shot placement. By carefully following the steps outlined above and using appropriate equipment, you can significantly reduce the time and ammunition required for zeroing your weapon. Remember to prioritize safety and always practice responsible firearm handling. With practice and patience, you'll master the art of boresighting and improve your shooting accuracy.
