Finding the right scope rings is crucial for accurate long-range shooting. A slight misalignment can drastically impact your shot placement at extended distances. For those serious about precision at ranges exceeding 300 yards, 20 MOA scope rings are a game-changer. This guide delves into everything you need to know about 20 MOA scope rings, helping you choose the perfect set for your rifle and shooting style.
Understanding MOA and its Importance in Long-Range Shooting
MOA, or Minute of Angle, is a unit of angular measurement. One MOA equals approximately 1 inch at 100 yards. This means at 100 yards, a 1 MOA shot group will measure 1 inch in diameter. At 600 yards, that same 1 MOA group expands to 6 inches. This is where the advantage of 20 MOA rings becomes apparent.
What a 20 MOA Ring Does: A 20 MOA scope ring base incorporates a 20-minute angle of elevation into the mounting system. This effectively raises the scope's point of impact (POI) 20 MOA upward. Why is this helpful? Because it provides the shooter with much more vertical adjustment range before needing to maximize their scope's adjustments.
In simpler terms: Imagine your scope has a limited amount of upward adjustment. Without 20 MOA rings, you might run out of upward adjustment before you can zero your rifle at long distances. The 20 MOA rings give you that extra headroom, making zeroing in at long ranges much easier.
When to Use 20 MOA Scope Rings
- Long-range shooting: If you're shooting beyond 300 yards consistently, 20 MOA rings are highly recommended.
- High-powered rifles: High-powered rifles with significant bullet drop at distance need the extra elevation adjustment provided by these rings.
- High magnification scopes: Using high magnification scopes often requires more elevation adjustment to compensate for bullet drop.
- Competitions: Precision long-range shooting competitions frequently necessitate the use of 20 MOA rings to achieve optimal accuracy.
Choosing the Right 20 MOA Scope Rings: Key Factors
Selecting the right 20 MOA scope rings requires careful consideration of several factors:
1. Ring Height: Finding the Perfect Fit
Ring height is critical to ensure proper clearance between the scope and the rifle's barrel. Too low, and the scope might hit the barrel; too high, and the scope's mounting stability suffers.
Determining the correct height: Measure the diameter of your scope's objective lens and the distance between your scope's tube and the rifle's receiver. Consult the manufacturer's specifications for recommended ring height based on your scope and rifle.
2. Material and Construction: Durability and Stability
Scope rings are typically made from aluminum, steel, or a combination of both. Aluminum offers a good balance of strength and weight, while steel provides superior strength but adds weight.
Key considerations:
- Durability: The rings must withstand recoil and impacts.
- Stability: The rings must firmly hold the scope in place without shifting.
- Finish: A durable finish resists corrosion and wear.
3. Mounting System: Securing Your Scope
Different mounting systems offer varying levels of security and ease of installation.
- One-piece vs. two-piece rings: One-piece rings offer better alignment and rigidity, while two-piece rings are generally easier to install and adjust.
- Clamping mechanism: Secure clamping mechanisms are essential to prevent scope slippage.
4. Brand Reputation: Choosing a Reliable Manufacturer
Several reputable brands manufacture high-quality 20 MOA scope rings. Researching reviews and comparing features from different brands will help you choose the best rings for your needs. Look for brands with a history of producing reliable and durable products.
Installation and Zeroing: A Step-by-Step Guide
Proper installation is vital to ensure your scope's accuracy. Incorrect installation can lead to misalignment and inaccuracy.
Steps:
- Prepare the Rifle: Ensure the rifle's action is clean and free of debris.
- Mount the Rings: Securely attach the 20 MOA rings to the rifle's rail or receiver. Tighten screws evenly and firmly to prevent misalignment.
- Mount the Scope: Carefully place the scope into the rings and tighten the rings according to the manufacturer's instructions.
- Zeroing: Zero your scope at various distances using a range or suitable area. The 20 MOA rings will provide the necessary elevation adjustments for long-range zeroing.
Case Study: Improving Long-Range Accuracy with 20 MOA Rings
A competitive long-range shooter experienced consistent issues zeroing their rifle beyond 600 yards. The scope’s inherent limitations prevented accurate adjustment at longer distances. After switching to 20 MOA rings, they significantly improved their accuracy and consistency, achieving consistent hits at ranges of up to 1000 yards.
Conclusion: Mastering Long-Range Accuracy with 20 MOA Scope Rings
For serious long-range shooters, 20 MOA scope rings are an invaluable tool that expands the scope of elevation adjustment, directly enhancing accuracy at extended ranges. Careful consideration of ring height, material, mounting system, and brand reputation will help you choose the perfect set for your rifle and shooting needs. With proper installation and zeroing, you'll unlock the full potential of your long-range shooting.