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Rifle Scope Tips: How To Adjust a Rifle Scope in 2021

how to adjust a rifle scope

Rifle Scope Tips: How To Adjust a Rifle Scope in 2021

To get the full advantage of a riflescope, you must know exactly how to adjust it properly. If you’re new to firing a scoped rifle, you may be questioning some riflescope change essentials like how to zero the scope to your rifle, just how to place your scope to your rifle, and how to adjust your scope for various distances or wind problems.

However, even if you’re experienced with a scoped rifle, there are some adjustments that you might not know regarding that will certainly help you be a lot more efficient with your riflescope. Actually, several of these are setups that a lot of my sniper pupils had actually readjusted inaccurately. Despite which rifle shooter you are, you’re going to find out everything about each of the modifications on your riflescope and just how to utilize them to turn on your own right into a more reliable rifle shooter.

In this guide, we will certainly reveal to you how to adjust a rifle scope. But first, we require to cover some fundamental scope components, terms, as well as technicians. Hope this post could help you understand how to adjust a rifle scope, if any questions, feel free to contact us.

Basic Riflescope Parts and Terminology

Before we talk about how to make adjustments to certain parts of the scope, we need to know what those parts are (and a brief description of what they do). Let’s start from the rear of the scope as it is mounted on your rifle (the part closest to your face) and move forward towards the front of the copes (the side pointing at your target). Here is a diagram from the Long Range Shooting Handbook of a scope’s main parts:

Ocular Lens: The lens closest to your eye when you’re looking through your scope. Do yourself a favor, ALWAYS use scope caps to protect your lenses and keep them clean.

Ocular Housing: The “eyepiece” of the scope which houses the ocular lens and, in most cases, the ocular focus adjustment.

Ocular Focus Adjustment: The mechanism responsible for focusing the image of the reticle (crosshairs) inside the scope to your eye. On some scopes, the entire ocular housing turns for this adjustment. On others, only the outer section around the ocular lens adjusts.

Magnification Adjustment: On variable power scopes, this mechanism adjusts the magnification power of the scope.

Scope Body: The main part of the scope to which the other parts attach and the tube through which you look when aiming.

Turrets: Knobs that protrude from the scope body used to adjust elevation and windage. These can be exposed (easily grabbed and adjusted) or capped (wherein a cap covers and protects the turret.

Reticle: The “cross-hairs” or reference point in the scope used for aiming. In modern long-range shooting scopes, the reticles can be quite busy with references for elevation and windage holds.

Parallax Adjustment / Target Focus: This scope adjustment brings the target image into the same focal plane as the reticle. This ensures that there is no parallax (relative shifting of position between two objects you’re looking at) and that the target image is in focus. On higher-end scopes, this is usually a knob on the side of the scope body (these are called “Side focus” or “side parallax” scopes). On other scopes, this can sometimes be found around the objective lens and is adjusted by turning the entire outer ring of the objective end of the scope (these are called “adjustable objective scopes”).

Objective Lens: This is the lens facing the target and is very often the larger of the two external lenses of a scope. Again, you should always have a scope cap protecting this. Ok, we’ve got the basic parts of a scope covered, let’s dive into how to make adjustments to your scope. Hope this post could help you understand how to adjust a rifle scope, if any questions, feel free to contact us.

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How To Make Elevations Adjustments On Your Riflescope

To change the impact of the bullet up or down relative to where you are aiming with your scope, you need to make an “elevation” adjustment. Elevation adjustments are made when you are “zeroing” the scope to your rifle or when you are shooting at different distances.

” Zeroing” a range is guaranteeing that the factor of objective (POA) with the scope on the target coincides as the point of impact (POI) where the bullet actually strikes the target at a baseline range. When a brand-new range is installed on a rifle, it should be “zeroed.” When capturing at ranges different than the range at which you zeroed your scope, the bullet’s effect (POI) will be higher or lower than your factor of purpose (POA).

This is because bullets fall as quickly as they leave the barrel of your rifle as well as since the barrel is pointed slightly higher to compensate for this decline, your bullet travels in an arc to the target. Quite just, to move the impact of your bullet up, you turn the altitude turret towards “up” on your scope.

For most scopes, this involves revolving the turret counter-clockwise. To reduce the bullet’s impact, the majority of extents call for that the altitude turret is turned clockwise. PLEASE VALIDATE ON YOUR SPECIFIC EXTENT. Each “click” of the turret represents an angular dimension. Several searching scopes adjust in 1/4 MOA (1/4 ″ per 100 yds). Hope this post could help you understand how to adjust a rifle scope, if any questions, feel free to contact us.

Windage Adjustments

Comparable to elevation adjustments on a scope, windage modifications are for moving the influence of the bullet when zeroing a range to a rifle or for adjusting to shooting problems. Nonetheless, instead of the altitude turrets’ Backwards and forwards adjustments, windage turrets adjust the influence of the bullet left or right.

Usually, when my range is zeroed, I seldom touch the windage turrets. Yes, wind can significantly relocate a bullet in the trip (especially at distance), yet I prefer to “hold” left or right (goal to the left or the right of the target– particularly useful with reference marks on the reticle) as opposed to making a windage change with the windage turret. This is because the wind changes too promptly to re-adjust each time and I could neglect to relocate the windage turret back to “zero.”

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Parallax(Target Focus) Adjustments

Parallax is bad. It can cause you to miss a target if your head is not perfectly aligned each time you shoot. Let me explain… As an example, extend your left arm and raise your index finger. Now, with the right index finger, align it halfway between your eye and your left index finger. You should now be looking at two fingertips, at different distances, aligned with each other.

Now, without moving your fingers, move your head slightly from left to right. Notice how your fingers are no longer aligned as your head moves even though they didn’t change position? This relative shift is referred to as parallax. If this happened with your reticle and the target, your misaligned head might cause you to move the rifle to bring the reticle back in line with the target. Hope this post could help you understand how to adjust a rifle scope, if any questions, feel free to contact us.

By moving the rifle, you’ve changed the orientation of the barrel, and thereby the path of the bullet = a miss. If your eye is focused on the reticle (it should be), then you can adjust the target focus to literally move the focal point of the image in the scope to be in line with the reticle. If the target’s image and the reticle are aligned on the same focal plane, not only will they both be in focus (no more straining with your eye to focus on one or the other), there will be no parallax effect. Win/win!

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Focusing The Eyepiece

The number one mistake I see on shooter’s scopes is an incorrectly focused eyepiece. This is because many shooters, even some of my professional sniper students, don’t even know this adjustment exists nor why it is so important to use. This means that there’s a good chance that this setting is wrong on your scope.

I was a special operations sniper in the military and I had the amazing opportunity to attend the Special Operations Target Interdiction Course (SOTIC), now called the Special Forces Sniper Course, the most prestigious sniper training available. This topic wasn’t covered their wen I went through which is likely why none of us as snipers took the time to get this adjustment right and why most of my sniper students when I was a sniper instructor didn’t have it right either.

Thankfully, you’re going to know better and now do it the right way! I know my shooting in the military would have improved, or at least been easier, had I done this. If you’ve ever caught yourself having either a clear reticle and blurry target or a clear target and blurry reticle, then you know the frustration of trying to focus back and forth. Hope this post could help you understand how to adjust a rifle scope, if any questions, feel free to contact us.

If you tried to adjust the target focus and it didn’t work, you also have likely experienced an improperly adjusted eyepiece. (also, my advice to better shooting is to only focus on the reticle anyway.) Your scope must be set up ad focused so that your eye can see the reticle clearly without straining. Only then can you bring the target image near the reticle and have both clear (and parallax free).

Steps To Focusing Your Scope’s Eyepiece:

  1. Once you’ve properly mounted your scope and are sure that it is in the proper position (forward/back) on the rifle, they would stare at a light-colored solid object close to you. This process is MUCH easier with a friend. If you don’t have any friends, stop reading and go find one.
  2. Get into a comfortable position behind your rifle. If you have to move your head to see through the scope clearly, you haven’t mounted your scope to fit you (see the video below for guidance)
  3. Have your friend (or the person you hired to pretend to be your friend) hold up a white sheet of paper a foot or two in front of your scope for you to look at through the scope.
  4. Close your eyes and rest them for a few seconds.
  5. Open your eye(s), look at the reticle, and then close them. Two seconds max! If you keep your eye open too long, your eye will strain to bring the reticle in focus and will defeat the purpose of this exercise.
  6. Have your friend adjust the ocular focus adjustment at least 1/2 revolution in one direction. On some scopes (like the one pictured above and in the video below) the entire ocular housing rotates to adjust the focus and is held in place with a locking ring. Whereas other scopes, like my favorite the Vortex Razor Gen II, there is a special adjustment ring around the ocular lens.
  7. Open your eye(s) again or only two seconds and simply say whether the image of the reticle looks better or worse.
  8. Keep repeating the exercise by turning the adjustment in both directions until a “sweet spot” is found where the reticle looks the best.

If you’ve done this correctly, your reticle and scope are now focused on YOUR eye and you will have less strain shooting and an easier time removing parallax errors. Hope this post could help you understand how to adjust a rifle scope, if any questions, feel free to contact us.

Magnification Adjustments

If your scope has an adjustable magnification, a ring just forward of the ocular housing is typically what is used to adjust magnification. On some scopes, like Nightforce scopes, the entire ocular housing must be rotated to adjust the magnification (this is one reason I do not like Nightforce scopes). For all adjustable power scopes, the target image will get larger or smaller by changing the magnification. However, on some scopes, the reticle increases in size proportionate to the target image, and in other scopes, the reticle stays the same size throughout the magnification range.

These two types of scopes are called First Focal Plane (FFP) and Second Focal Plane (SFP).

First Focal Plane: First focal plane riflescopes (FFP) adjust the reticle WITH the target image. This means that you can use any graduated markings on the reticle for measurement at any magnification setting. This is useful for range estimation using Mils. The cons to this feature are that the reticle might be too thick or too thin at the extreme magnification ranges and the cost of the scope will likely be higher. If you’re serious about long-distance target shooting, give FFP scopes a look.

Second Focal Plane: Second focal plane (SFP) riflescopes adjust ONLY the target image and the reticle stays the same size. This can be useful for always having a reticle that is just the right size to see and aim with but it can be a problem if you try to use graduated marks on the reticle at the incorrect power setting. For example, if you have Mil or MOA marks on your reticle, in most cases they’ll only actually equate to their true size at full power. If you lower the power setting, the marks stay the same size but the image gets smaller – no good. Of course, you can do the math if you’d like (e.g. half power, marks are twice as big). This is super useful for a hunting scope – SFP is often more robust (less moving parts) and you don’t have to worry about not seeing your reticle in low light and at low power. An exception to the “full power” rule is Nightforce scopes – they sometimes have a random dot on the power ring where the marks are accurate (reason number 2 I don’t like them).

Changing The Brightness On Illuminated Reticles

If you have a scope with an illuminated reticle, most likely you can also adjust the brightness of the reticle. On most scopes, this adjustment is on the left side of the scope and it differs from scope to scope – you’re going to have to reference your scope’s manual on this one. However, three pieces of advice when it comes to illuminated reticles:

  1. Always check that you turned it off when you’re done shooting. Although red dot scopes like the Aimpoint Comp M series red dot scopes can last for YEARS while on, that technology hasn’t made it to rifle scopes yet and the battery will likely be dead the next time you need it if you leave it on.
  2. Store an extra battery somewhere on or with the rifle. I like to put cheekpiece stock packs on all of my rifles and I store an extra battery there.
  3. When trying to shoot accurately, turn the brightness down. When it’s too bright, it can sparkle and make it difficult to be precise.

Moving The Scope On The Rifle

Having your scope properly adjusted on your rifle isn’t really an “adjustment on your scope,” but it is VERY important and should be addressed while mounting your scope on your rifle and before you are worried about making adjustments on your scope. Hope this post could help you understand how to adjust a rifle scope, if any questions, feel free to contact us.

Your scope and rifle must fit YOU to get the best performance out of the system. In my Long Range Shooting Handbook, I make the analogy to a race car driver being expected to drive a regular car well if the seat and mirrors aren’t adjusted to the driver. Sure, they’ll still be better than the average driver, but without the car being set up for them, they won’t get the best possible performance. There are three areas to explore when it comes to the scope’s position on your rifle:

  1. The height of the scope
  2. The forward/rearward position of the scope
  3. The rotational level of your scope

We’ll explore each of these three below, however, the video I shared above in the ocular focus section walks through each of these as well.

Adjusting The Height Of Your Scope

If your scope isn’t the right height on your rifle, you’ll have to lift your head when you shoot. This problem is easy to identify. You should lay the full weight of your head on the cheekiest of your stock with your eyes closed. Once you’re comfortable, open your eyes and see if you can see through the scope.

If you can’t then determine whether you need to raise or lower your head and then you’ll know what adjustment needs to make. If your head needs to move up (most common), then you’ll also be able to tell from getting a tired neck from previous range sessions. You can’t shoot well if you’re fatigued. You can either change the height of your scope with different height scope rings (don’t skimp on quality) or by using a cheekpiece stock pack and perhaps adding layers of insulation underneath. Hope this post could help you understand how to adjust a rifle scope, if any questions, feel free to contact us.

Adjusting The Scope Forward and Rearward

Only after your scope is at the right height, should you worry about the forward/rearward position. Get on your rifle in a comfortable position with your eyes closed. Once set, open your eyes and you should already be at the right height. If you are, move the scope forward and backward until the image is clear. If the scope is too far one way or the other, you’ll see a black fuzzy ring around the image called “scope shadow.”

Scope shadow is a GOOD thing – it is what lets you know that your eye is properly aligned behind the scope. But, you need the scope adjusted so that when you are properly behind the scope, you see zero scope shadow. This is another area where people will move their head to a position that can see clearly through the scope (instead of the other way around) and end up straining their neck. Also, if the scope is too close, you run the risk of smacking yourself on the eyebrow and getting a case of “scope bite.”

Our Top Picks of Rifle Scope

T-Eagle ER5-20x50SFIR Hunting Side Parallax Riflescope

You don’t have to search high and low if you are after a quality rifle scope that covers all the basics that a good deer hunting scopes can accomplish. All you need is to get your hands on the T-Eagle ER5-20x50SFIR.

This is the best rifle scope for whitetail deer hunting. Taking pride in its functionality, it doesn’t believe in flair. It is a scope that grants its user simplicity and 100% quality.

Based on aviation aluminum ally material it is made of CNC precision machining to make the product lighter and more durable. The overall performance has been improved, and the factory has passed strict seismic tests and tests in various harsh environments.

This scope comes with full-wideband coating for eyepieces and objectives Also known as an antireflection coating. Observations at different angles will present different Ribbon(this is the performance of multi-layer coating)Good imaging, high definition, and high color reproduction.

Additionally, the T-Eagle ER5-20x50SFIR also has an Etched Reticle Reset. Whether the scope is not in use or is out in the most unforgiving environment, it is capped for protection. For protection against the environment, it is fully fog-proof and waterproof for coverage against unavoidable accidents during hunting season. These accidents can range from a sudden drop from a tree or a quick submersion into mud and puddles. Overall, this is a smart buy.


We hope that you learned something about how to adjust your riflescope! Now, get your scope set up properly and get out to the range and practice. Please let us know if you have any questions, we will reply to you soon.

T-Eagle always offers high-quality rifle scopes at a friendly price, our mission is to provide you with an excellent shopping experience. If you have a large order and also other concerns, please do not hesitate to contact us, we will reply to you in 24 hours. Many thanks for shopping with us!

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