How Are Scope Rings Measured?

ByBuffalo Rifles Blog

How Are Scope Rings Measured?

When you’re shopping for scope rings, it’s important to know how they’re measured. The two most important measurements are the diameter of the rings and the height of the rings. The diameter of the rings refers to the inside diameter, which is the size of the tube that the scope will fit into. The height of the rings refers to the distance between the top of the rings and the bottom of the rings.

Diameter of Scope Rings

The diameter of scope rings is typically measured in inches. The most common diameters are 30mm, 34mm, and 35mm. The diameter of the rings needs to be compatible with the diameter of the scope tube. If the rings are too small, the scope will not fit. If the rings are too large, the scope will not be held securely in place.

Height of Scope Rings

The height of scope rings is typically measured in millimeters. The height of the rings determines how much clearance there is between the scope and the barrel of the rifle. The amount of clearance needed depends on the type of scope mount you’re using.

There are two main types of scope mounts: cantilever mounts and picatinny rails. Cantilever mounts extend forward from the receiver of the rifle, which creates more clearance for the scope. Picatinny rails are mounted directly to the receiver of the rifle, which provides less clearance for the scope.

When you’re shopping for scope rings, it’s important to know the diameter and height of the rings that you need. You can find this information in the owner’s manual for your scope. If you don’t have the owner’s manual, you can measure the diameter of the scope tube with a micrometer. The height of the rings can be determined by measuring the distance between the top of the scope tube and the bottom of the receiver of the rifle.

Measurement Description Example
Objective Diameter The diameter of the objective lens in millimeters 50mm
Tube Diameter The inside diameter of the scope tube in inches 1.5 inches
Ring Height The distance from the top of the scope tube to the bottom of the scope rings 0.8 inches

Scope rings are an essential part of any rifle scope setup. They provide a secure mounting point for the scope and help to protect it from recoil. However, it can be difficult to know how to measure scope rings correctly. This guide will walk you through the process of measuring scope rings, so you can get the perfect fit for your rifle.

Scope Ring Terminology

Before you can measure scope rings, it’s important to understand the terminology involved. Here are the most important terms to know:

  • Objective lens: The lens at the front of the scope that gathers light and focuses it on the image sensor.
  • Eyepiece lens: The lens at the back of the scope that the user looks through to see the image.
  • Scope ring: The metal ring that mounts the scope to the rifle.
  • Scope ring height: The distance from the center of the objective lens to the center of the eyepiece lens.
  • Scope ring diameter: The outer diameter of the scope ring.

How to Measure Scope Rings

Now that you know the terminology, you can start measuring your scope rings. Here are the steps involved:

1. Measure the objective lens diameter. This is the most important measurement, as it determines the size of the scope ring that you need. To measure the objective lens diameter, use a ruler or calipers to measure the diameter of the objective lens.
2. Measure the eyepiece lens diameter. This measurement is not as important, but it can help you to ensure that the scope rings are compatible with your scope. To measure the eyepiece lens diameter, use a ruler or calipers to measure the diameter of the eyepiece lens.
3. Measure the distance between the centers of the objective lens and the eyepiece lens. This measurement is necessary to determine the correct scope ring height. To measure the distance between the centers of the objective lens and the eyepiece lens, use a ruler or calipers to measure the distance from the center of the objective lens to the center of the eyepiece lens.

Once you have measured your scope rings, you can use this information to purchase the correct size of scope rings for your rifle.

Measuring scope rings can be a daunting task, but it’s important to get it right so that you can mount your scope securely and get the best possible performance out of it. By following the steps in this guide, you can easily measure your scope rings and get the perfect fit for your rifle.

Additional Resources

  • [How to Choose the Right Scope Rings](https://www.opticsplanet.com/blog/how-to-choose-the-right-scope-rings/)
  • [Scope Ring Height Chart](https://www.midwayusa.com/product/1004820516/scope-ring-height-chart)
  • [How to Mount a Scope on a Rifle](https://www.pewpewtactical.com/how-to-mount-a-scope-on-a-rifle/)

How Are Scope Rings Measured?

Scope rings are measured in two dimensions: diameter and height. The diameter of a scope ring is the inside diameter of the ring, and it is measured in inches. The height of a scope ring is the distance from the top of the ring to the bottom of the ring, and it is measured in inches.

When choosing scope rings, it is important to make sure that the diameter of the rings matches the diameter of the scope tube. The height of the rings can be adjusted to accommodate different scopes, but it is important to make sure that the rings are high enough to provide adequate clearance for the scope’s ocular bell.

Most scope rings are sold in sets of two, one for the front of the scope and one for the rear of the scope. The front ring is typically larger than the rear ring, as it needs to accommodate the larger diameter of the scope tube.

Here is a table that shows the typical measurements for scope rings:

| Diameter | Height |
|—|—|
| 1 inch | .5 inch |
| 30mm | 1 inch |
| 34mm | 1.5 inches |
| 35mm | 1.75 inches |
| 40mm | 2 inches |

Types of Scope Rings

There are three main types of scope rings: fixed, adjustable, and quick-release.

  • Fixed scope rings are the most common type. They are permanently attached to the rifle and cannot be adjusted. Fixed scope rings are typically less expensive than adjustable scope rings.
  • Adjustable scope rings can be adjusted to change the height of the scope. This can be useful if you are using a scope with a different eye relief than your rifle. Adjustable scope rings are typically more expensive than fixed scope rings.
  • Quick-release scope rings allow you to quickly and easily remove the scope from the rifle. This can be useful if you need to remove the scope for storage or transportation. Quick-release scope rings are typically more expensive than fixed or adjustable scope rings.

Here is a table that summarizes the features of each type of scope ring:

| Type | Features |
|—|—|
| Fixed | Permanently attached to the rifle, cannot be adjusted |
| Adjustable | Can be adjusted to change the height of the scope |
| Quick-release | Allows you to quickly and easily remove the scope from the rifle |

Tips for Choosing Scope Rings

When choosing scope rings, there are a few things you should keep in mind:

  • The diameter of the rings must match the diameter of the scope tube.
  • The height of the rings must be high enough to provide adequate clearance for the scope’s ocular bell.
  • The rings must be made from a durable material that will not damage your scope or rifle.
  • The rings must be easy to install and remove.

Here are a few specific tips for choosing scope rings:

  • If you are not sure what size scope rings you need, consult the owner’s manual for your scope.
  • If you are using a scope with a different eye relief than your rifle, you may need to choose adjustable scope rings.
  • If you are concerned about damaging your scope or rifle, you may want to choose scope rings that are made from a durable material, such as aluminum or steel.
  • If you find it difficult to install or remove scope rings, you may want to choose scope rings that are easy to install and remove.

Scope rings are an important part of any riflescope setup. They help to secure the scope to the rifle and provide a stable platform for the scope to mount on. When choosing scope rings, it is important to make sure that the rings are the correct size and type for your scope and rifle. You should also make sure that the rings are made from a durable material and are easy to install and remove.

How are scope rings measured?

Scope rings are measured by their outside diameter (OD) and inner diameter (ID). The OD is the measurement of the ring from the inside of one lip to the inside of the other lip. The ID is the measurement of the ring from the outside of one lip to the outside of the other lip.

What do the numbers on scope rings mean?

The numbers on scope rings typically refer to the OD of the ring in millimeters. For example, a scope ring with the number “30mm” on it would have an OD of 30mm.

What size scope rings do I need?

The size of scope rings you need will depend on the diameter of your scope tube. Most scopes have a tube diameter of 1 inch or 30mm. If your scope has a 1-inch tube, you will need scope rings with an OD of 1 inch. If your scope has a 30mm tube, you will need scope rings with an OD of 30mm.

How do I install scope rings?

To install scope rings, you will need to:

1. Remove the factory scope mounts from your rifle.
2. Clean the mounting surfaces of your rifle with a degreaser.
3. Apply a thin coat of thread locker to the threads of the scope rings.
4. Mount the scope rings to your rifle.
5. Tighten the scope rings until they are snug against the rifle.
6. Insert your scope into the scope rings and tighten the scope rings until they are snug against the scope.

What are the different types of scope rings?

There are two main types of scope rings: one-piece rings and two-piece rings.

  • One-piece rings are a single piece of metal that wraps around the scope tube. They are typically less expensive than two-piece rings, but they are also less adjustable.
  • Two-piece rings consist of two separate rings that are attached to each other with a hinge. They are more adjustable than one-piece rings, but they are also more expensive.

What are the benefits of using scope rings?

Scope rings provide a solid mounting platform for your scope. They help to ensure that your scope is properly aligned with the bore of your rifle, which will improve accuracy. Scope rings also protect your scope from damage.

What are the disadvantages of using scope rings?

Scope rings can add weight to your rifle. They can also make it more difficult to remove your scope from your rifle.

Can I use scope rings with a red dot sight?

Yes, you can use scope rings with a red dot sight. However, you will need to make sure that the red dot sight is compatible with the scope rings. Some red dot sights require a specific type of scope ring.

scope rings are an important part of any rifle setup, and it is important to make sure that you choose the right ones for your needs. The size, type, and material of the scope rings will all affect how your rifle performs, so it is important to do your research and make sure that you are getting the best possible scope rings for your money.

Here are a few key takeaways to remember when choosing scope rings:

  • The size of the scope rings must match the size of the scope tube.
  • The type of scope rings (cantilever, fixed, or QD) will depend on your personal preferences and the type of rifle you have.
  • The material of the scope rings will affect their weight, strength, and durability.

By following these tips, you can be sure that you will choose the best scope rings for your rifle and get the most out of your shooting experience.

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