Sighting in an AR-15 for Long-Range Accuracy
When it comes to shooting long-range targets with an AR-15, accuracy is key. Whether you are a seasoned shooter or just starting out, properly sighting in your rifle is crucial to hitting your mark consistently. In this article, we will discuss the importance of sighting in an AR-15 for long-range accuracy and provide you with some tips on how to do it effectively.
The Basics of Sighting In
Before we dive into the specifics of sighting in an AR-15 for long-range accuracy, let’s first understand what it means to “sight in” a rifle. Sighting in involves aligning the sights of your rifle with the point of impact on the target. This ensures that when you aim at a specific point, your bullet will hit that point consistently.
- Ensure your rifle is securely mounted on a stable shooting platform.
- Start at a relatively close distance, such as 25 yards, to get on paper.
- Make adjustments to your sights based on where your shots are hitting in relation to your point of aim.
Choosing the Right Optic
When it comes to long-range shooting with an AR-15, having the right optic can make all the difference. There are several options available, including red dot sights, holographic sights, and magnified scopes. Each type of optic has its own advantages and disadvantages, so it’s important to choose one that suits your shooting style and preferences.
For long-range shooting, a magnified scope is typically the best option. Look for a scope with adjustable magnification levels, clear glass, and reliable turrets for making precise adjustments. A mil-dot reticle can also be helpful for estimating range and windage.
Understanding MOA
MOA, or Minute of Angle, is a unit of measurement used to describe the accuracy of a rifle. One MOA is equal to 1 inch at 100 yards, so if your rifle is capable of shooting 1 MOA groups, it should be able to consistently hit a 1-inch target at 100 yards. Understanding MOA is essential for making precise adjustments when sighting in your AR-15 for long-range accuracy.
When adjusting your sights, each click typically represents a certain number of MOA. For example, if each click on your scope’s turrets equals 1/4 MOA, then four clicks would move the point of impact by 1 inch at 100 yards. Keep this in mind when making adjustments to ensure you are dialing in your rifle accurately.
Zeroing Your Rifle
Zeroing your rifle means setting the point of impact at a specific distance so that your shots hit where you aim. For long-range shooting with an AR-15, a common zero distance is 100 yards. However, depending on your shooting needs and preferences, you may choose a different zero distance such as 200 or 300 yards.
- Start by ensuring your rifle is securely mounted and stable on a shooting rest.
- Aim at the center of the target and fire a group of shots to determine where they are hitting in relation to your point of aim.
- Make adjustments to your sights based on where the shots are hitting until they align with your point of aim.
Fine-Tuning for Long-Range Accuracy
Once you have zeroed your rifle at your desired distance, it’s time to fine-tune for long-range accuracy. This involves making adjustments to account for factors such as bullet drop, wind drift, and environmental conditions that can affect shot placement over longer distances.
Consider using ballistic calculators or apps to help you calculate adjustments for different ranges and conditions. Practice shooting at various distances and under different conditions to become familiar with how these factors impact bullet trajectory and make adjustments accordingly.

Conclusion
Sighting in an AR-15 for long-range accuracy requires patience, practice, and attention to detail. By understanding the basics of sighting in, choosing the right optic, mastering MOA measurements, zeroing your rifle effectively, and fine-tuning for long-range precision, you can improve your shooting skills and hit targets with confidence at extended distances.
Remember that consistency is key when it comes to long-range shooting, so take the time to sight in your rifle properly and practice regularly to hone your skills. With dedication and perseverance, you can become a skilled marksman capable of hitting targets accurately at long ranges with your AR-15.