Mounting a Scope on Shotgun: A Step-by-Step Guide
As an avid hunter or target shooter, using a scope on your shotgun can greatly improve your accuracy and precision. However, mounting a scope on a shotgun can be a bit tricky if you’re not familiar with the process. In this article, we’ll take a step-by-step approach to help you mount a scope on your shotgun with confidence.
Before You Start
Before you begin the process, make sure you have the following:
• A shotgun with a rifled barrel (most modern shotguns have rifled barrels, but some old models might not)
• A suitable scope for a shotgun (consider the tube diameter, magnification power, and reticle pattern)
• A scope base or adapter specifically designed for shotguns
• Basic tools like a torque wrench, scope rings, and a magnifying glass or lamp
• Patience and a willingness to experiment
Choosing the Right Scope
When selecting a scope for your shotgun, consider the following factors:
• Tube diameter: Shotguns typically require scope tubes with a diameter of 20mm or less. Be sure to match the scope tube diameter with the adapter or base installed on your shotgun.
• Magnification power: Shotguns are usually effective at distances of 10-40 yards, so a low to moderate power scope (1.5-6x) should suffice. Higher magnification scopes might be unnecessary, but are still useful if you’re shooting at long ranges or need to correct for ballistic drop.
• Reticle pattern: A scope with a center dot reticle is commonly used for shotguns. This design helps you adjust for distance and shot angle.
Mounting the Scope
Now that you have the right scope, it’s time to install it. Follow these steps:
Installing the Scope Base or Adapter
Step 1: Loosen the Scope Base Clamp
Gently loosen the scope base clamp by twisting it counterclockwise. You may need a wrench or pliers depending on the type of clamps your shotgun has. Take note of any torque specs provided by the manufacturer.
Step 2: Remove and Inspect the Base Plate
Gently lift off the base plate, revealing the barrel’s underside. Inspect the area around the drilled and tapped scope base mounting holes for dirt, rust, or excess lubricant. Cleaning the area with a toothbrush or soft cloth and mild detergent can help.
Step 3: Attach the Scope Base or Adapter
Take your scope base or adapter, and position it over the mounting holes. Make sure it aligns properly, then firmly press it down onto the barrel. Gently turn the scope base clamp in a clockwise direction until snug. If using an adapter, some may have a spring or detent to keep them in place. Follow manufacturer instructions.
Assembling the Scope Rings
Step 1: Prepare the Scope Rings
Take the scope rings provided with your scope and familiarize yourself with their components, such as the upper ring, lower ring, and screws.
Step 2: Attach the Scope Rings
Place the scope rings over the scope tubes, aligning the recoil lug notches. For most scope rings, start by tightening the upper ring screws followed by the lower ring screws. It’s crucial to keep them evenly tensioned to maintain the scope’s position during recoil. Use a torx driver or screwdriver to prevent damage to the scope tubes.
Adjusting and Boresighting the Scope**
**Step 1: Adjust for Windage (Left and Right)**
Loosen the scope base clamp or adapter slightly if necessary, then use your scope’s windage (the adjustment marked with an arc or ‘W’ label) to center the aim. Turn the adjustment knobs clockwise (right) for a 1 o’clock hold and counterclockwise (left) for a 11 o’clock hold. **Be conservative when making adjustments to ensure accuracy.**
**Step 2: Adjust for Elevation (Up and Down)**
Adjust your scope’s elevation (height) as needed using the elevation (marked with lines or hash marks) for a clean, 200-yard boresight image. Remember to use mild adjustments for accuracy.
