6-24×50 Scope vs 9×40: Which Magnification Do You Need?
By Amis Thains Updated 5 min read
As an Amazon Associate we earn from qualifying purchases, at no cost to you.
On this page (7 sections)
You are standing in front of two scopes, one with a smaller tube and one with a larger tube, and you cannot decide which magnification range fits your shooting. This page tells you exactly which one wins for close-range hunting and which one wins for long-range target work.
In short: The 9×40 (typically 3-9x or 4-12x) is the winner for most hunters and general-purpose shooters because it offers a wider field of view and faster target acquisition at close range. The 6-24×50 wins only if you need to identify and hit targets beyond 300 yards, such as prairie dogs, steel plates, or large game at maximum legal distance.
Quick picks
Our shortlist for this job · tap one to see today's price
The 6-24x50 magnification helps you resolve small targets at 400+ yards that a 9x scope would miss.
A 3-9x40 type scope gives you the wide view you need to track moving game quickly in the woods.
The differences at a glance
The main difference is not just the numbers. The 9×40 usually refers to a scope with a maximum magnification of 9x and a 40mm objective lens. The 6-24×50 has a maximum magnification of 24x and a 50mm objective lens.
This means the 6-24×50 is physically larger, heavier, and optimized for light gathering at distance. It helps to understand selecting a 3-9x40 scope before going further.
| Feature | 9×40 (3-9x) | 6-24×50 |
|---|---|---|
| Max Magnification | 9x | 24x |
| Objective Lens | 40mm | 50mm |
| Tube Diameter | 1″ | 30mm |
| Field of View | Wider | Narrower |
| Best For | Hunting, General Use | Target, Varmint, Long Range |
Notice the tube diameter. The 6-24×50 uses a 30mm tube, which requires heavier rings. The 9×40 uses a standard 1-inch tube. This is a physical difference you must plan for in your mounting system.
Pro tip: Always check if your scope rings match the tube diameter. A 1-inch tube scope will not fit 30mm rings without adapters.
Magnification and light gathering: Why the 50mm lens matters
The 50mm objective lens in the 6-24×50 collects more light than the 40mm lens in a 9×40. This is critical when you are shooting at dawn or dusk, or when you are trying to see a small target against a dark background.
The larger aperture lets more photons hit the sensor or your eye, keeping the image bright even at high magnification.
However, the 9×40 has a lower minimum magnification. If you shoot at 3x, the 9×40 shows you a huge slice of the world. This makes it easy to find a deer in the trees. The 6-24×50 starts at 6x, which is already too narrow for quick target acquisition in dense brush. You will be staring into a small tunnel.
For most hunting, the 9×40 wins this factor because speed matters more than resolution. You need to find the animal, not just see it clearly from a mile away. We go through 4-16x44 vs 6-24x50 scope comparison chart step by step in its own article.
This specific 6-24x50 scope includes red and green illumination, which helps keep the reticle visible in low light where the extra light gathering is beneficial.
- Magnification: 6-24x
- Objective Diameter: 50mm
Field of view: Tracking moving targets
Field of view (FOV) is how much of the target area you see through the scope. As magnification increases, FOV decreases. This is a physical law. At 24x, your view is a narrow tube. At 3x, your view is wide.
If you are hunting moving game like quail, hogs, or deer in open fields, a narrow FOV is dangerous. You may lose track of the animal as it moves through the scope. The 9×40 offers a wider view at its lower settings, giving you more time to track the animal.
The 6-24×50 is built for stationary targets. If you are bench shooting at steel or paper, the narrow view is a feature, not a bug. It forces you to be precise. But for field hunting, the 9×40 wins because it is forgiving.
A 3-9x40 scope provides the wide field of view needed to keep track of moving animals in a natural environment.
- Ample 3x-9x power paired with large 40mm adjustable objective is perfect for use with
- Variable 3x-9x power and 40mm parallex adjustable objective. Fingertight
Build, weight, and mounting considerations
The 6-24×50 scope is longer and heavier. It typically uses a 30mm tube, which is stronger and allows for more windage and elevation adjustments. This is necessary for long-range shooting where bullet drop is significant.
The 9×40 is more compact. It sits lower on the rifle and is easier to carry in the woods. It usually uses a 1-inch tube. This makes it cheaper to mount, as you can find many budget rings for 1-inch tubes. For the 30mm tube, you need specific rings that fit that diameter.
If you are putting this on an AR-15, the 6-24×50 will look and feel more tactical, but it will push the balance point forward. The 9×40 feels more balanced for a general-purpose rifle. It helps to understand 3-9 vs 6-24 scope before going further.
These 30mm rings are specifically designed for the 6-24x50 tube diameter, ensuring a secure fit that maintains zero under recoil.
- Solid Medium Scope Ring: 30 mm diameter scope rings with 1.05 inch ring center height
- Enhanced Recoil Stop for Stable Mounting: Dual-lug design prevent the scope from
Which one is better for your budget?
Generally, the 9×40 is cheaper. You are paying for a smaller lens and a shorter tube. The 6-24×50 costs more because of the larger optics and the 30mm tube construction.
However, do not buy the cheapest 6-24×50 you can find. Cheap scopes often have poor glass that looks washed out at high magnification. If you cannot find a high-quality 6-24×50 in your budget, a mid-price 9×40 will likely perform better for general use than a low-budget 6-24×50.
Always check the warranty. Budget scopes can be hit or miss. A reliable brand with a good warranty is worth paying extra for, regardless of the magnification range.
The bottom line
Buy the 9×40 if you are a hunter or plinker who needs speed, a wide field of view, and a compact profile. Buy the 6-24×50 only if you have specific long-range targets, such as varmint at 400+ yards, or steel plates, and need the resolution and light gathering of the 50mm lens. For most shooters, the 9×40 is the better all-around tool.
- Ample 3x-9x power paired with large 40mm adjustable objective is perfect for use with
- Variable 3x-9x power and 40mm parallex adjustable objective. Fingertight
Frequently asked questions
Can I use a 6-24×50 scope for hunting?
Yes, but it is difficult. The minimum 6x magnification makes it hard to find and track moving game in the woods. It is better suited for open terrain where you have time to set up and take a precise shot. For most hunting, a lower-magnification scope is easier to use.
What is the difference between a 1-inch tube and a 30mm tube?
A 30mm tube is wider than a 1-inch tube. It allows for more internal adjustment for windage and elevation, which is needed for long-range shooting. It also makes the scope heavier and more durable. You must ensure your scope rings match the tube diameter. Loaders in this spot often ask about choosing between scope sizes as well.
Is a 6-24×50 better than a 3-9×40 for an AR-15?
For most AR-15 users, the 3-9×40 is better. It is lighter, cheaper, and more versatile for plinking and medium-range shooting. The 6-24×50 is only better if you are dedicated to long-range targets or varmint shooting beyond 300 yards.
Do I need illuminated reticles on these scopes?
Illumination is helpful for low-light hunting and low-light target shooting. It is not required for daytime shooting. If you buy a 6-24×50 for long-range work, a reticle with a fine center dot and illumination is a significant advantage for precision.