Introduction
The thrill of stretching the boundaries of accuracy, the satisfying *thump* of impact hundreds of yards away – long-range shooting has captivated enthusiasts for generations. And at the heart of many precision-focused setups lies a powerful and versatile platform: the AR10. This article is your comprehensive guide to the AR10 long range build, transforming your desire for accuracy into reality. Whether you’re a seasoned shooter looking to upgrade or a newcomer eager to learn, we’ll walk you through the crucial components and considerations necessary for crafting an exceptional long-range rifle.
The AR10, a derivative of the AR-15 platform, represents a significant step up in power. Chambered for larger calibers like .308 Winchester and 6.5 Creedmoor, the AR10 offers the inherent advantages needed to compete at longer distances. The increased ballistics and the ability to reach out and touch targets further enhance the appeal. Unlike its smaller counterpart, the AR10 is specifically engineered to handle the higher pressures and larger cartridges associated with extended range engagements.
This guide will delve deep into the key components that will make or break your AR10 long range build. From choosing the ideal caliber to selecting the perfect optics, we’ll explore every aspect to equip you with the knowledge needed to assemble a rifle that meets your long-range shooting aspirations.
Caliber Considerations for Long-Range Excellence
The caliber of your rifle is the foundation upon which your entire long-range accuracy is built. It dictates trajectory, wind drift, recoil, and overall performance at extended ranges. Therefore, the selection of the right cartridge is crucial.
.308 Winchester/7.62x51mm NATO
One of the most readily available and historically popular choices for the AR10 long range build is the .308 Winchester, also known as 7.62x51mm NATO. This cartridge offers significant power and readily available ammunition, making it a practical option for many shooters. However, the .308 does have limitations. The heavier bullet, while carrying energy well, produces a more pronounced drop over distance, and wind drift can be a factor. The recoil is generally more noticeable than some of the newer options.
6.5 Creedmoor
For those prioritizing long-range performance, the 6.5 Creedmoor has rapidly become a favorite. This cartridge boasts a flatter trajectory, reduces wind drift significantly, and offers excellent ballistic coefficients, resulting in superior downrange performance. The 6.5 Creedmoor offers a significant advantage in both precision and long-range capability, making it an attractive choice. While ammunition might be a bit more expensive than .308, the enhanced performance often justifies the investment.
Other Caliber Options
There are also other options such as the .260 Remington and the 6mm Creedmoor. These calibers offer unique advantages, but it’s crucial to understand their nuances. The .260 Remington is a solid choice, but may not have as widespread factory ammo availability as the more popular options. The 6mm Creedmoor is another contender known for its accuracy and reduced recoil.
The best caliber for your AR10 long range build hinges upon your intended range, the type of targets you plan to engage, the importance of ammunition availability, and, of course, your budget. For pure long-range performance, 6.5 Creedmoor often edges out .308, especially for those wanting to push the boundaries of their shooting skills. If you’re starting out, .308 offers great availability and training potential.
The Barrel: The Heart of Accuracy
The barrel is arguably the most important component contributing to accuracy in any rifle. It’s the pathway the bullet takes, and its quality has a direct bearing on precision at range.
Barrel Length
Barrel length is a critical consideration. For long-range shooting, longer barrels generally provide advantages. Barrels ranging from twenty to twenty-four inches or even longer often deliver superior ballistic performance. The longer barrel allows the propellant gases to fully expand, optimizing velocity, leading to a flatter trajectory, and reducing wind drift. This results in increased stability and better performance. However, there are trade-offs. Longer barrels can add weight to the rifle and might compromise maneuverability, particularly if you shoot from varied positions. Balance the need for long-range performance with the desired mobility.
Barrel Profile and Material
Barrel profile and material are other important considerations. Heavier profiles (often referred to as bull barrels or heavy contours) typically offer greater stability under sustained firing and a reduced tendency to heat up quickly. Stainless steel barrels are preferred by many for their corrosion resistance and often offer superior accuracy characteristics. Chrome moly barrels remain a solid choice, but may require more care to prevent rust.
Rifling Twist Rate
The rifling twist rate also plays a crucial role. The twist rate determines the rate at which the bullet spins as it travels down the barrel, affecting its stability in flight. Select a twist rate that complements your chosen caliber and bullet weight. Consulting a ballistics chart and the bullet manufacturer’s recommendations is invaluable when determining the correct twist rate for your setup. The right twist rate is essential for consistent accuracy.
Investing in a high-quality barrel from a reputable manufacturer is critical. Brands specializing in precision barrels include criteria for a precise barrel. Make sure to choose a reputable barrel manufacturer to guarantee superior accuracy and durability for your AR10 long range build.
Upper Receiver and Bolt Carrier Group: Foundation of Reliability
The upper receiver serves as the housing for the barrel, bolt carrier group, and handguard. Material choice and quality are important.
Upper Receiver
The upper receiver is generally made from aluminum. Billet uppers may offer enhanced aesthetics and rigidity compared to forged uppers, but the differences in performance are often negligible. The most important factor is ensuring that the upper receiver is compatible with your other components.
Bolt Carrier Group (BCG)
The bolt carrier group (BCG) is absolutely critical for reliability and consistent operation, especially in an AR10 long range build. Its design directly impacts the rifle’s cycling ability and the extraction and ejection of spent cases. Look for BCGs made from high-quality materials. Companies have come up with various coatings that further improve performance such as Nitride and Nickel Boron.
Pay attention to the bolt. The bolt face, extractor, and ejector must be carefully crafted and properly dimensioned to ensure consistent extraction and ejection. Consider selecting a BCG from a reputable manufacturer known for reliability and quality, this will prevent many issues that can arise.
Lower Receiver and Trigger: Refinement for Precision
The lower receiver houses the fire control group, magazine well, and the stock. It’s important for the correct selection of your AR10 long range build.
Lower Receiver
The material of the lower receiver is usually aluminum. Billet lower receivers are sometimes preferred due to their clean aesthetic and potential for enhanced stiffness. Make sure the lower receiver fits comfortably, allows easy access to controls, and is compatible with your other parts.
Trigger Group
The trigger group is pivotal for accuracy. A crisp, clean trigger pull encourages steadier aiming and more predictable shot placement.
- Single-stage triggers offer a constant pull until the break.
- Two-stage triggers have a distinct take-up followed by a lighter final pull.
- Drop-in triggers are easy to install.
Experiment with different pull weights to find what feels best for you. A trigger pull weight of three to four pounds is often preferred for long-range shooting, though this varies based on shooter preference.
Handguard Selection for Stability and Accessory Integration
A free-floating handguard is essential for precision. A free-floating handguard does not make contact with the barrel, eliminating the stress and inconsistencies that can affect accuracy.
Handguard Features
The length of your handguard should accommodate your barrel length and any accessories you plan to use.
The mounting system also matters. *MLOK*, *KeyMod*, and *Picatinny* rails are common options for attaching accessories such as bipods, lights, and lasers. Choose a system that suits your needs and desired level of modularity.
Handguard Material
The material of the handguard is usually aluminum. A good handguard should be lightweight yet rigid.
Stock and Accessory Integration for Enhanced Performance
Your stock provides crucial support and influences your ability to consistently and comfortably acquire your target.
Stock Selection
Choose an adjustable stock that offers length-of-pull (LOP) and cheek weld adjustments. These features allow you to fit the rifle precisely to your body, improving comfort, consistency, and accuracy.
Fixed stocks can also offer significant stability. If you’re prioritizing stability over adjustability, consider a fixed stock.
Accessories
Select a bipod, or other shooting support, designed for precision shooting.
The optic is a critical component. The scope’s magnification, objective lens size, and reticle type will directly impact your ability to identify and engage targets at extended ranges.
Assembly and Zeroing: The Final Steps
Building your AR10 long range build is an engaging project, but assembling the components carefully is critical. Read the manufacturer’s instructions for each part. Use the proper tools, including a torque wrench to tighten screws and fasteners to the manufacturers specified torque specifications.
Bore sighting, by looking through the barrel and then through the scope, offers a way to get you on paper at the beginning.
The zeroing process involves shooting groups at a known distance (e.g., one hundred yards) and adjusting your scope’s turrets until your point of impact matches your point of aim.
Maintenance and Upkeep for Longevity
Regular maintenance is essential for keeping your AR10 long range build in optimal condition. Proper cleaning after each shooting session is critical to remove carbon buildup and powder residue. Use a quality gun cleaning solvent and bore cleaner.
Lubricate the moving parts with a high-quality gun oil. Inspect your rifle regularly for any signs of wear or damage.
Safety First
Gun safety is paramount. Always treat every firearm as if it were loaded. Wear eye and ear protection at all times when shooting. Follow all range safety rules.
Cost and Budgeting
Building an AR10 can be a significant investment. The price can vary widely depending on the quality of components selected. By carefully researching the components and choosing the brands that meet the performance and budget requirements you can control the final cost of your AR10 long range build.
Conclusion
Building an AR10 long range build is a fulfilling endeavor that puts the power of long-range precision in your hands. By carefully selecting the components and paying attention to the details, you can create a rifle that is exceptionally accurate and a joy to shoot. Now, it’s time to begin. Start your research, carefully plan your build, and enjoy the satisfaction of seeing your rifle’s capabilities on the range.
If you have questions or would like to share the details of your own builds, please feel free to share below.
