Vortex Diamondback 4 12×40 review

There are certainly good enough reasons as to why most hunters and target shooting enthusiasts have vortex optics among their favorite riflescope brands. First of all, the optics and the build quality are both amazing and even so, you get the biggest bang for your buck with either of their riflescopes

Well, when mounted on your favorite gun, you’ll most definitely be taking some of the best shots of your life. So, does the Vortex Diamondback 4 12x40 have what it takes to live up to its brand name? How good are the optics and is the build quality going to hold in different hunting and target shooting situations? It’s about time we found out.

Here’s what you’ll be looking forward to from this bad boy.

It’s not always about the optics when it comes to riflescopes. As a matter of fact, the build quality is mostly overlooked by most but then, to enjoy the optics and have an easy time setting up the rifle, this is what you should pay attention to.

That being said, how about we take a look at how well the vortex diamondback 4-12x40 scope holds up?

Features a solid one-piece tube design

Starting off with what is one of the most important aspects of any riflescope, this bad boy comes with a 1-inch tube design. So, as far as using the riflescope rings is concerned, this should be compatible with a lot of these.

Other than the installation, the 1" tube means that it will be mounted much closer to the rifle and as we all know, the closer it is to the rifle, the better off of scope it is as far as accuracy is concerned. Yet another thing that's worth mentioning about the tube design is that it's a one-piece which makes it one of the strongest plus it won’t let moisture in easily.

The one-piece tube design also does have a hard anodized finish which creates a shockproof and durable scope while at the same time camouflaging your position during a hunt.

That’s not all…

For the overall scope physical measurements, it has got a 12.0” length and weighs only 14.6 ounces so you won’t have to worry about it adding on too much weight to your rifle.

Moisture and water-resistant design

If you are familiar with vortex diamondback scope reviews, then you do know this is a feature that is common with the Vortex riflescopes. Designed for the ultimate hunter the Vortex Diamondback 4-12x40, first of all, features an O-ring seal which is meant to prevent the entry of water from the outside during a heavy rain downpour.

Besides the O-ring, it is also argon-purged and this is meant to expel any moisture that might have crept into the rifle. At the end of the day, you get to have the utmost clarity when looking through the eyepiece

Has got metal on metal precision turrets

Now here’s something that every hunter will appreciate. Featuring a capped style turret, this riflescope can be used both in your blind and during stalking the prey.

The metal on metal precision turrets also have the zero-reset function after sighting in and they also come with a precision glide erector system which keeps the tracking accurate and allows for repeatability.

The Optics

Now here’s the moment we’ve all been waiting for. Equally as good as the build quality and design, the optics too do hold up pretty well. here’s what you’ll be looking forward to.

Has got a 40mm objective lens

The lens diameter is of utmost importance and with as large a diameter as 40mm, the vortex diamondback will be letting in plenty of light which then results to you getting some really bright images.

Other than just letting in enough light for bright images, it holds up quite well on the magnification since it can be set anywhere between 4x and 12x so it can be counted on during a hunt.

Yet another thing that makes it suitable for hunting is the Second Focal Plane reticles which are situated near the eyepiece of the scope right behind the image erecting and magnifying lenses. Even when changing the magnification, the size of the reticles will be consistent and by maintaining the same appearance, you’ll have a better view of your target.

For easy reticle focusing there is a fast focus eyepiece that allows for easy and quick reticle focusing

Fully multi-coated optics

As much as the 40mm objective lens will give you some really clear images, the addition of a full multi-coating adds on to this. By maximizing the amount of light available, you should get some bright and high contrast images.

To back up the multi-coated optics, there is an Xd extra-low dispersion glass which increases the resolution and the color fidelity.

Has got a side parallax adjustment

For easy access while at the same time allowing for optimal mounting height, there is a side parallax adjustment set at 100 yards.

As for the eye relief, this is set to 3.1” so you’re guaranteed to have your brows clear with every shot you take


  • Comes with fully multi-coated optics
  • Features a solid one-piece tube design
  • Has got side parallax set at 100 yards
  • A second focal plane reticle for clear and accurate shots
  • Features a hard, anodized shockproof finish
  • Fast focus eyepiece for quick and easy focusing
  • Argon purge & O-ring sealed for fog proof and waterproof performance


  • The crosshairs get fuzzy at high power


Q: is this a crosshair scope?

Q: is it a dead hold scope?

Q: does it come with scope caps?

Final verdict

We're finally done with the vortex diamondback 4 12x40 review. With the amazing optics, durable construction and user-friendly adjustments, it sure would be a worthy upgrade and a good hunting riflescope to start off with. As good a riflescope as it is, do observe utmost care and maintenance for consistent accuracy.

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