Achieving Precision: The Ultimate Guide to the Sightmark SM39020 Laser Boresight for .22-250 Rem and 6.5 Creedmoor

For any marksman, hunter, or sport shooter, achieving pinpoint accuracy is paramount. Whether you're setting up a new rifle scope, checking your zero after a long journey, or simply want to conserve expensive ammunition, a reliable boresight is an indispensable tool. Among the myriad options available, the Sightmark SM39020 Laser Boresight stands out as a purpose-built solution designed specifically for two highly popular and precise calibers: the .22-250 Remington and the 6.5 Creedmoor.

This comprehensive guide delves into why the Sightmark SM39020 is a must-have for owners of rifles chambered in these calibers, exploring its features, benefits, and how it empowers users to achieve superior accuracy and efficiency in their shooting endeavors.

What is a Laser Boresight and Why Do You Need One?

Before diving into the specifics of the Sightmark SM39020, let's understand the fundamental role of a laser boresight. A boresight is a device used to align a rifle's bore (the inside of the barrel) with its sighting system (scope, iron sights, red dot). Traditional methods often involve tedious trial-and-error shooting at a target, which consumes significant time and, more importantly, valuable ammunition.

A laser boresight, like the Sightmark SM39020, projects a highly visible laser beam directly down the barrel, simulating the bullet's path. By aligning your optic's reticle with this laser dot, you can quickly and accurately get your firearm "on paper" – meaning your first shots at the range will likely hit the target, even if not precisely in the bullseye. This saves a tremendous amount of ammunition, reduces frustration, and allows you to spend more time fine-tuning your zero rather than just getting started.

Who benefits most from a laser boresight?

• New Rifle Owners: Simplifies the daunting task of initial scope mounting and zeroing.
• Hunters: Critical for verifying zero after travel, ensuring ethical and accurate shots in the field without needing a dedicated range trip.
• Sport Shooters (Precision Rifle, Varmint Hunting): Provides a quick way to check scope alignment between stages or before a competition.
• Anyone Looking to Save Ammunition: Especially relevant for premium or specialty ammunition like the 6.5 Creedmoor and .22-250 Rem, which can be costly.
• Reloaders: Helps confirm consistent setup across different loads.

The Sightmark SM39020: Engineered for .22-250 Remington and 6.5 Creedmoor Precision

The Sightmark SM39020 Laser Boresight is not a generic, multi-caliber solution that requires arbors or adapters. Instead, it is precisely machined to mimic the dimensions of a .22-250 Remington and 6.5 Creedmoor cartridge. This "chamber" style design ensures maximum concentricity and alignment with the bore, leading to unparalleled precision in the boresighting process.

Constructed from durable brass, the unit is designed to withstand the rigors of regular use while maintaining its form and function. The high-output red laser produces a crisp, visible dot, allowing for easy alignment even in various lighting conditions.

Key Features that Elevate Your Shooting Experience:

• Caliber-Specific Design: Directly chambers into .22-250 Remington and 6.5 Creedmoor rifles, ensuring superior accuracy compared to muzzle-mounted or universal systems. This precision eliminates guesswork and provides a true representation of your bore's alignment.
• High-Visibility Red Laser: Projects a bright, clear laser dot that is easy to see against targets, even at longer indoor boresighting distances or in low light. The laser maintains a consistent beam for reliable alignment.
• Durable Brass Construction: The robust brass casing ensures longevity and resistance to wear and tear. Its solid construction means it will maintain its precise dimensions over time, crucial for accurate boresighting.
• Compact and Portable: Designed for easy transport, fitting perfectly into the included padded carrying case. This makes it an ideal tool to bring along for any hunting trip, range session, or pre-season check.
• Long Battery Life: Powered by common batteries, the boresight offers extended operational time, ensuring it's ready when you need it most. A complete battery pack is included to get you started right away.
• Included Accessories: Comes complete with a convenient battery pack and a protective carrying case, providing everything necessary for immediate use and safe storage.

How Does the Sightmark SM39020 Work? A Step-by-Step Guide

Using the Sightmark SM39020 Laser Boresight is straightforward and efficient. Follow these steps to quickly align your rifle's optics:

1. Ensure Firearm Safety: Always begin by confirming your firearm is unloaded, the chamber is clear, and the safety is engaged. Remove the bolt if your rifle design permits it for easier insertion.
2. Insert Batteries: Open the battery compartment on the boresight and insert the included batteries according to the polarity indicators.
3. Chamber the Boresight: Carefully insert the Sightmark SM39020 into the rifle's chamber, just as you would a live round. Ensure it seats fully. The laser should immediately activate and project a dot down the barrel.
4. Position Your Firearm: Secure your rifle in a stable rest or vise, aiming it at a target approximately 20-25 yards away. A target with a grid pattern or a clearly marked center point works best.
5. Adjust Your Optic: Look through your rifle scope. You will see the laser dot projected on your target. Using the windage and elevation adjustment turrets on your scope, move the reticle (crosshairs) until they perfectly align with the center of the laser dot.
6. Verify and Remove: Once the reticle is aligned with the laser dot, your scope is now "on paper." Carefully remove the boresight from the chamber. It's often helpful to keep the rifle pointed in a safe direction and cycle the action gently to eject the boresight.
7. Live Fire Fine-Tuning: While the Sightmark SM39020 gets you incredibly close, a final zeroing process with live ammunition at your intended shooting distance (e.g., 100 yards, 200 yards) is always recommended to account for bullet drop, parallax, and other environmental factors. The boresight dramatically reduces the number of shots needed for this final step.

Real-World Use Cases: Solving Common Shooting Challenges

The Sightmark SM39020 Laser Boresight is more than just a tool for initial setup; it's a problem-solver in various scenarios:

• "How do I zero my new rifle scope quickly without wasting a box of ammo?"
  The SM39020 is your answer. By using the laser, you can align your scope in minutes, ensuring your first few shots at the range are already hitting the target, allowing you to focus on precise adjustments rather than finding the target.
• "I just mounted a new scope on my 6.5 Creedmoor. What's the best way to get it ready for the range?"
  Chamber the SM39020, align your scope's reticle with the laser dot at 25 yards, and you'll be within inches of the bullseye at 100 yards with your first live rounds. This is a highly efficient method for any new optic installation.
• "My .22-250 varmint rifle got bumped during transport. How can I quickly check if my scope's still zeroed before a hunt?"
  Instead of firing expensive rounds to confirm zero, simply insert the SM39020. If your reticle is still perfectly centered on the laser dot, your zero is likely intact, saving you time and valuable hunting moments. If it's off, you can quickly adjust it without needing a full range setup.
• "What's the difference between boresighting and zeroing?"
  Boresighting (using the SM39020) is the preliminary alignment of your scope with the rifle's bore. It gets you "on paper." Zeroing is the final, precise adjustment using live ammunition at a specific distance, accounting for bullet trajectory and environmental factors, to ensure your shots hit exactly where the crosshairs are aimed. The SM39020 makes the first part of this process incredibly efficient.
• "Is a laser boresight accurate enough for precision shooting?"
  While a laser boresight provides an excellent starting point, especially one as precisely designed as the Sightmark SM39020, it's a foundational step, not the final one for extreme precision. It dramatically reduces the time and ammunition needed for initial zeroing, allowing you to fine-tune with live fire, which is essential for sub-MOA accuracy. It saves the first 5-10 shots that would otherwise be used just to get on the paper.

Why Choose the Sightmark SM39020 Over Other Options?

Many boresighting solutions exist, from simple collimators to more complex magnetic systems. However, the Sightmark SM39020 offers distinct advantages for .22-250 Remington and 6.5 Creedmoor users:

• Superior Accuracy via Chamber Fit: Unlike universal systems that rely on the barrel's crown or magnetic attachment, the SM39020 chambers directly into the rifle's action. This mimics a live round, ensuring the laser is perfectly concentric with the bore, leading to a much more accurate initial alignment. This is a critical factor for the precision calibers it supports.
• No Muzzle Obstruction: Muzzle-mounted devices can sometimes be affected by barrel inconsistencies or simply not sit perfectly straight. The chamber-style design bypasses these potential issues.
• Robust and Reliable: Sightmark is a brand known for producing durable and reliable optics and accessories. The brass construction of the SM39020 is a testament to its long-term reliability and ability to withstand repeated use.
• Cost-Effective in the Long Run: While an initial investment, the money saved on ammunition during zeroing quickly makes the Sightmark SM39020 an economical choice, especially with the rising cost of 6.5 Creedmoor and .22-250 Rem ammunition.
• Ease of Use: Its intuitive design means even novice shooters can quickly and effectively use it to set up their optics. No complex adjustments or software are required.

Extending the Life of Your Boresight: Maintenance and Care

To ensure your Sightmark SM39020 continues to perform reliably for years to come, consider these simple maintenance tips:

• Store in the Included Case: The padded carrying case protects the boresight from impacts, dust, and moisture when not in use.
• Remove Batteries for Long-Term Storage: To prevent battery leakage and potential damage to the electronics, remove the batteries if you don't plan to use the boresight for an extended period.
• Keep it Clean: Use a soft, dry cloth to wipe down the brass casing after use. Avoid abrasive cleaners or solvents that could damage the laser emitter or casing.
• Handle with Care: While durable, avoid dropping or subjecting the boresight to harsh impacts, which could affect its internal components or calibration.

The Sightmark SM39020 is more than just a convenience; it's an intelligent investment for anyone serious about optimizing their shooting experience with .22-250 Remington or 6.5 Creedmoor rifles. Its precision engineering, user-friendly operation, and robust construction make it an indispensable tool for efficient scope setup, zero verification, and ultimately, enhanced shooting accuracy. Get yours today and experience the difference a truly optimized boresighting solution can make.

All Sightmark products, including the SM39020 Laser Boresight, are available for purchase at DEGuns. We are committed to providing top-tier firearm accessories to elevate your shooting performance.

Product Specifications: Sightmark SM39020 Laser Boresight

Feature	Specification / Detail
Model	SM39020
Laser Type	Red Laser
Caliber Compatibility	.22-250 Remington, 6.5 Creedmoor
Construction Material	Brass
Includes	Battery Pack, Protective Carrying Case
Power Source	Specific Batteries (often AG3 or similar button cells)
Application	Rifle Scope Zeroing, Optic Alignment, Zero Verification
UPC	810119010865