How to Sight in a Scope [For Better Long-Range Accuracy]

There’s a special kind of satisfaction that comes from hitting a target exactly where you aimed, especially when it’s far away. That confidence doesn’t come from luck; it comes from a precise and methodical process. Knowing how to sight in a scope for better long-range accuracy is the foundational skill that separates hopeful shots from consistent performers. It’s the essential first step in building a reliable long-range system with your rifle.

Many shooters feel intimidated by the process, envisioning complex calculations and wasted ammunition. But the truth is, with a solid plan and a bit of patience, anyone can learn how to sight in a scope for better long-range accuracy. It’s less about innate talent and more about following a series of careful steps to align your point of aim with your point of impact. Let’s walk through the process together, from the initial setup to making those final, fine-tuning clicks.

Gathering Your Gear and Setting Up Safely

Before you fire a single shot, preparation is key. You’ll need a few essentials: a solid rest like sandbags or a bipod front and rear, a stable shooting bench if possible, your targets, and of course, eye and ear protection. Choose a calm day; wind is your enemy when trying to establish a true zero. Safety is always the top priority, so ensure you’re at a certified range or a safe, private property with a proper backstop.

Start by making sure your scope is mounted correctly. All bases and rings should be firmly torqued to the manufacturer’s specifications. A loose scope will never hold a zero. Once mounted, perform a quick boresight. You can use a laser boresighter or simply remove the bolt, look down the bore, and center a target at a short distance, then adjust the crosshairs to match. This gets you on paper and saves a lot of time and ammunition.

The Step-by-Step Process for a Flawless Zero

Begin at a close range, typically 25 yards. This might seem counterintuitive for long-range shooting, but it’s a highly efficient method. The small target area makes it easy to see where your shots are landing relative to your aim point. Fire a three-shot group, aiming for a consistent point of aim. Don’t worry about the first shot being a “flier”—focus on building a group.

Now, look at the center of your group. Let’s say it’s 2 inches low and 1 inch to the left of your bullseye. Here’s where you’ll use your scope’s turrets. The adjustment knobs are usually labeled “UP” and “DOWN” for elevation and “LEFT” and “RIGHT” for windage. Remember the simple phrase: “Follow the holes.” If your group is low, you need to come up. If it’s left, you need to go right. Most scopes adjust in fractions of an inch at 100 yards (e.g., 1/4 MOA). At 25 yards, each click will have 1/4 the effect. So, to move 2 inches at 25 yards, you’d need 8 clicks of adjustment on a 1/4 MOA scope (since 8 clicks at 100 yards = 2 inches, and at 25 yards it’s 1/4 of that). Make your adjustments, fire another three-shot group, and confirm you are now centered.

How to Sight in a Scope for Better Long-Range Accuracy

With a solid 25-yard zero, you’ve done the heavy lifting. Now it’s time to validate and refine at a longer distance. Move your target out to 100 yards. Fire another careful three to five-shot group. Your point of impact should be very close to your point of aim, often just a fraction of an inch high, depending on your cartridge. This is your 100-yard zero.

For true long-range work, this 100-yard zero is your baseline. The next step involves understanding your rifle’s ballistics. Using a ballistic calculator app or chart for your specific ammunition, you can learn your bullet’s trajectory at 200, 300, 400 yards, and beyond. This data tells you how much to hold over your target at various distances. Alternatively, if you have a scope with an adjustable turret, you can dial the exact elevation correction for a given range. Confirming these “dope” (data on previous engagement) values at actual distances is the final step in mastering your long-range setup.

Fine-Tuning and Maintaining Your Zero

A one-time zero isn’t forever. Your zero can shift if your scope gets bumped, due to temperature changes, or even from using different ammunition. It’s a good habit to confirm your zero before any important shooting session. Think of it as a quick check-up for your rifle.

Consistency is the secret to long-range accuracy. Pay attention to the fundamentals every time you shoot: a steady position, a consistent cheek weld, a smooth trigger press, and following through. The most perfectly sighted-in scope in the world won’t help if the shooter behind it is inconsistent. Keep a data book or a small notebook with your rifle’s specific zero information, the ammunition you used, and the environmental conditions. This log becomes an invaluable resource over time.

By following this structured process, you build a foundation of trust in your equipment. You’ll know that when you squeeze the trigger, the bullet will go precisely where the crosshairs are aimed. That confidence is what allows you to focus on the other elements of long-range shooting, like reading the wind and managing your position. With your scope properly sighted in, you’re ready to reach out with precision and consistency.