The Ultimate Guide To Rifle Scopes

Whether you’re a passionate hunter or a dedicated target shooter, finding the proper rifle scope can transform your shooting experience.

A rifle scope comes in handy while you’re pursuing your game, trying to be ready before the action.

In this comprehensive guide, we’ll help you understand rifle scopes from the basics to advanced features, so you can confidently choose the perfect scope for your needs.

What Is A Rifle Scope?

A rifle scope is a telescopic optical system mounted on a firearm. You can experience a magnified and precise view of the target because of this.

This improved view makes aiming easier, even at longer distances where using regular iron sights would be difficult.

Key Functions of a Rifle Scope

The major key functions of a rifle scope are:

• Magnification: With a rifle scope, you can have varying levels of magnification and see the target as though it were really close. This is usually helpful for accurate shooting at longer distances.
• Precision aiming: A rifle scope features a reticle pattern that provides you with a clear aiming point. This target point is superimposed on the magnified target image.
• Enhanced accuracy: In return, with the combination of magnification and precise aiming, you can hit your targets more accurately—even for long ranges. This is essential for hunters who need to ensure a clean shot.

Why Should You Have a Rifle Scope?

Here are some reasons to have rifle scopes:

1. Target Acquisition

A rifle scope makes it much easier for you to locate and identify the target. It is especially beneficial in environments where long-range shots or small targets require precision.

2. Low-Light Performance

If you have scopes with larger objective lenses, then they can gather more light, and you can see even in dim conditions. This is critical for early morning or late evening hunts when lighting is limited.

3. Long-Distance Shooting

Rifle scopes are good for shooting beyond the capabilities of the human eye, especially in environments where targets are far away. Knowing you can clearly see and align your shot at long distances boosts confidence and shot placement.

4. Reduced Eye Strain

Scopes can help you avoid eye strain that can occur when you try to focus both on the front and rear view. With a scope, you only focus on one point, making aiming easier on your eyes.

Essential Rifle Scope Components

Before trying to buy a rifle scope, you must understand its components.

1. Magnification

Magnification in a rifle scope uses a series of lenses to increase the size of an image of a distant target.

Higher magnification is better for long-distance precision shooting, while lower magnification is suitable for close-range or moving targets.

For example, a 3-9x scope can magnify the image of your target to appear 3 times up to 9 times closer. You know the right magnification level depends on your shooting needs.

2. Objective Lens

The objective lens is the primary front lens of the scope that gathers light and starts the image formation process.

The larger the objective lens (e.g., 50mm), the more light it gathers, resulting in a brighter and clearer image.

However, a larger lens also adds weight and requires higher mounting rings.

3. Reticle

Reticles provide you with precise aiming points. They are available in different styles, such as:

• Duplex (Simple crosshairs): Good for all-around use.
• BDC (Bullet Drop Compensating): Includes holdover lines for estimating bullet drop.
• Mil-dot: Useful for long-range estimation.

You can get reticles based on the task requirement and personal preference. Choose a reticle that matches your shooting style and needs. 

Pro Tip: Curious about how different rifle scope reticles work? Check out this in-depth guide on reticle types to explore options like Duplex, BDC, and Mil-dot.

4. Tube Diameter

You will find that a tube contains the internal lenses and adjustment mechanism. The diameter of the main body of the scope, the tube, houses the internal lenses and adjustment mechanisms. Standard options include:

• 1-inch tubes: Lightweight and easier to mount.
• 30mm tubes: Allow for a wider range of adjustment, suitable for long-range precision shooting.

5. Adjustment Turrets

The knobs/dials are usually found on the top (elevation) and the side (windage) of your scope. They control the movement of the reticle.

Each click represents a specific change in the point of impact, usually measured in MOA (Minute of Angle) or MRAD (milliradians).

Key Tip: Use these turrets to fine-tune your shot when zeroing your scope or adjusting for wind and elevation.

Understanding Scope Terminology

Here are some terms that can guide you better at the beginning of this journey.

• • MOA: Minute of Angle. 1 MOA is roughly 1 inch at 100 yards. Turrets commonly adjust in ¼ MOA clicks.

• • Mil-Dot/MRAD: Milliradian-based reticles for range estimation and holdovers.

• • Parallax: Optical error is correctable in many scopes, especially for long-range use.

• • First Focal Plane (FFP): Reticle size changes with magnification (good for range estimation).

• • Second Focal Plane (SFP): Reticle size remains constant (simpler for most shooters).

How to Choose the Right Scope?

Because it’s difficult to give a precise number of rifle scope types, we have divided it based on the common types. You can choose the right scope based on your needs.

Identify Your Primary Use

Firstly, see what you need a rifle scope for and then choose the best one.

• Hunting: Consider the type of game you’ll pursue, typical ranges, and lighting conditions. You might need a rifle scope that is best for low-light performance, especially for dawn/dusk hunting.
• Target shooting: To have precision, you must look for higher magnifications, say 10x. For this goal, you must get scopes with target-friendly reticles and good adjustment features.
• Tactical Use: Durable scopes with illuminated reticles and quick target acquisition are ideal.

Choosing the Right Magnification

• Lower Power (1-4x): Best for close-quarters shooting or fast-moving targets.
• Medium Power (3-9x): Great for hunting and general shooting applications.
• High Power (10x+): Ideal for long-range target shooting where precise aiming is critical.

Pro Tip: For deer hunting, stick to medium power scopes like a 3-9x or 4-12x. They offer enough range for most scenarios without overwhelming your field of view.

Objective Lens

Always remember that larger diameters (40mm+) gather more light for a brighter image in low-light conditions. You must balance size with weight and rifle handling and remember that a larger objective lens might make the scope bulkier.

Reticle

There are 4 distinctions here:

Eye Relief

Eye relief is how far your eye needs to be from the scope to see clearly. The right distance keeps you comfortable and safe when your gun recoils.

Tube Diameter

Scopes come with different size tubes. 1-inch tubes are standard, but 30mm tubes let you fine-tune the aiming point more, which is helpful for shooting far away.

Budget

Good scopes can be expensive, but there are great options at different prices. Decide how much you can spend and what features are most important to you.

Brand Reputation

Choose a trusted brand that makes strong, clear scopes with good warranties in case something goes wrong.

Mounting & Using Your Scope

Now that you know the basics of a rifle scope and you have decided what you need a rifle scope for, let’s mount it.

Choosing Rings and Bases

Zeroing Your Rifle Scope

Basic zeroing process:

Using Adjustment Turrets:

• • Windage: Controls left/right adjustments to compensate for wind pushing the bullet.

• • Elevation: Controls up/down adjustments to compensate for bullet drop due to gravity, especially at longer distances.

Understanding MOA/MRAD:

• • MOA (Minute of Angle): 1 MOA equals roughly 1 inch of adjustment at 100 yards. So, a 4 MOA click moves the impact point 4 inches at 100 yards.

• • MRAD (Milliradian): 1 MRAD equals roughly 3.6 inches at 100 yards. Increasingly common for long-range shooting due to its metric base.

Focusing the Scope and Parallax Adjustment

• • Focus: Adjust the focus ring (often on the eyepiece) until the reticle and target image are crystal clear. This way you can have the perfect aiming point for the target.

• • Parallax Adjustment: You might find many scopes with parallax adjustment. Especially the ones used for longer ranges. The reason behind this feature is to help you eliminate optical errors. These errors can occur when the target and the reticle aren’t on the same focal. Don’t worry, with this feature you can adjust the angle until there is no error. 

Need more detailed zeroing instructions? Visit this step-by-step guide on how to zero a rifle scope to get a clearer picture of the process.

Care and Maintenance

It is very important to protect the lens and clean the scope now and then.

Final Thoughts

Choosing the right rifle scope can enhance your shooting accuracy and confidence. Focus on finding a scope with the right combination of magnification, lens size, and reticle type to match your shooting style.

Happy hunting, and may your shots be precise and on target!