Finding the right ring height for your 50mm scope is crucial for optimal performance and comfortable shooting. Too low, and you risk scope interference with the barrel; too high, and you'll compromise eye relief and potentially stability. This guide will walk you through determining the perfect ring height for your specific setup.
Understanding Scope Ring Height
Scope ring height is measured from the top of the scope base to the centerline of the scope tube. It's expressed in inches or millimeters. Choosing the wrong height can lead to several issues:
- Insufficient Clearance: Too-low rings can prevent the scope from mounting correctly or cause it to impact the barrel during recoil. This can damage both the scope and the firearm.
- Poor Eye Relief: Excessively high rings force the shooter to position their eye further back, reducing eye relief and potentially causing discomfort or injury during recoil.
- Unstable Platform: While not always the case, very high rings can create an unstable platform, especially with larger, heavier scopes.
Factors Affecting Ring Height Selection
Several factors influence the ideal ring height for your 50mm scope:
- Scope Diameter: Your scope's 50mm diameter is a key factor. While the tube diameter is consistent, the overall dimensions of the scope, including objective lens size and ocular bell, play a role in determining required clearance.
- Objective Lens Size: Larger objective lenses require more clearance to avoid touching the barrel.
- Barrel Profile: The profile of your firearm's barrel influences the necessary clearance. A heavy barrel will generally require higher rings compared to a thinner profile.
- Mount Type: The type of scope mount (e.g., one-piece, two-piece, picatinny rail) will dictate how the rings attach and affect the overall height.
- Personal Preference: While objective measurements provide guidance, personal preference also plays a part. Comfortable eye relief and sight picture are crucial for accuracy and enjoyment.
Determining the Correct Ring Height: A Step-by-Step Guide
-
Measure Your Scope: Carefully measure the diameter of your 50mm scope tube and the overall height, including the objective lens and ocular bell.
-
Assess Barrel Clearance: Visually examine the space between the barrel and the intended scope mounting position. Use calipers or a ruler to measure this clearance if necessary. Consider the firearm's recoil characteristics – more substantial recoil may necessitate slightly higher rings to accommodate any potential movement during firing.
-
Consult Manufacturer Specifications: Many scope and mounting manufacturers provide recommended ring heights for various firearms and scopes. Check the manuals or website for your specific models.
-
Experiment (If Possible): If you have access to different ring heights, consider trying a few to see which is most comfortable and provides adequate clearance.
-
Consider a Scope Ring Height Calculator: Several online calculators are available that help determine the appropriate ring height based on various factors such as scope dimensions and barrel profile. Inputting your scope and rifle's specifics into one of these calculators can provide a precise estimation.
Case Study: Determining Ring Height for a 50mm Tactical Scope on an AR-15
Let's consider a scenario: You're installing a 50mm tactical scope with a large objective lens onto an AR-15 platform. Due to the AR-15's relatively low profile and the large objective lens, you'll likely need medium to high rings. A medium height might suffice if the scope's overall length is not excessive, while a taller ring might be better if you desire greater clearance, particularly if the scope has an extended sunshade. Always test for proper eye relief with your rings installed before firing.
Troubleshooting Common Problems
-
Scope Touches the Barrel: If your scope touches the barrel, you absolutely need higher rings. This can severely damage your scope and potentially your firearm.
-
Poor Eye Relief: If you're straining to see through the scope or experiencing discomfort, increase the ring height to improve eye relief.
-
Unstable Sight Picture: Very high rings can sometimes contribute to an unstable sight picture. Consider using a different mount or exploring rings with a different clamping mechanism if this becomes an issue.
Conclusion: Finding the Sweet Spot for Your 50mm Scope
Selecting the correct ring height for your 50mm scope is essential for optimal performance, safety, and shooting comfort. By carefully measuring your scope and firearm, considering relevant factors, and consulting available resources, you can find the perfect ring height for your specific setup, ensuring a safe and enjoyable shooting experience. Remember, always prioritize safety and double-check your work before taking any shots.