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Diamondback Tactical 4-12x40

VMR-1 | 1-Inch Tube

Diamondback Tactical 4-12x40 Click to Enlarge
SKU: DBK-10025
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MSRP: $399.99
*Prices in US Dollars
Reviews:
Diamondback Tactical 4-12x40 is rated 4.9 out of 5 by 64.
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Diamondback® Tactical 4-12x40 Riflescope

Exposed tactical turrets built for dialing elevation and windage allow quick and precise bullet drop and wind drift compensation at extended ranges. When we say precise—we mean it. These turrets track better than any Bloodhound and reliably return to zero every time. A zero-reset feature lets you re-index the zero reference marks on both turrets after sight in, while fiber optic rotation indicators integrated into the turrets provide a visual cue of your turret’s position.

Dual use for Shooting Tactical / Hunting




Magnification4-12 x
Objective Lens Diameter40 mm
Eye Relief3.9 inches
Field of View23.6-7.9 feet/100 yards
Tube Size1 Inch
Turret StyleTactical
Adjustment Graduation1/4 MOA
Travel per Rotation12 MOA
Max Elevation Adjustment70 MOA
Max Windage Adjustment70 MOA
Parallax Setting100 yards
Length14.2 inches
Weight16.2 ounces
Product Manual (PDF)Download
Product Manual 2 (PDF)Download
Included in the Box
  • Lens Covers
  • Lens Cloth
  • Tools

Optical Features

XD™ Lens Elements Extra-low dispersion (XD) glass increases resolution and color fidelity, resulting in crisp, sharp images.
XR™ Fully Multi-Coated Proprietary coatings increase light transmission with multiple anti-reflective coatings on all air-to-glass surfaces.
Second Focal Plane Reticle Scale of reticle maintains the same ideally-sized appearance. Listed reticle subtensions used for estimating range, holdover and wind drift correction are accurate at the highest magnification.

Construction Features

Tube Size 1-inch diameter.
Aircraft-Grade Aluminum Constructed from a solid block of aircraft-grade aluminum for strength and rigidity.
Waterproof O-ring seals prevent moisture, dust and debris from penetrating the riflescope for reliable performance in all environments.
Fogproof Nitrogen gas purging prevents internal fogging over a wide range of temperatures.
Shockproof Rugged construction withstands recoil and impact.
Hard Anodized Finish Highly durable low-glare matte finish helps camouflage the shooter's position.
Precision-Glide Erector System Uses premium components in the zoom lens mechanism to ensure smooth magnification changes under the harshest conditions.
Exposed Tactical Turrets The Diamondback® Tactical scopes feature tactical windage and elevation turrets with Zero Reset making adjustments back to zero easy and quick.

Internal Mechanism Design Features

Precision-Glide Erector System Uses premium components in the zoom lens mechanism to ensure smooth magnification changes under the harshest conditions.

Convenience Features

Fast Focus Eyepiece Allows quick and easy reticle focusing.
Fiber Optic Radius Bar The patented fiber optic Radius Bar visually assists tracking turret rotations.
Magnification Rib The raised rib on the magnification ring facilitates fast magnification changes in the heat of action.
Magnification4-12 x
Objective Lens Diameter40 mm
Eye Relief3.9 inches
Field of View23.6-7.9 feet/100 yards
Tube Size1 Inch
Turret StyleTactical
Adjustment Graduation1/4 MOA
Travel per Rotation12 MOA
Max Elevation Adjustment70 MOA
Max Windage Adjustment70 MOA
Parallax Setting100 yards
Length14.2 inches
Weight16.2 ounces
Product Manual (PDF)Download
Product Manual 2 (PDF)Download

Diamondback Tactical 4-12x40 Dimensions

Lengths
L1 L2 L3 L4 L5 L6
14.2 1.9 2.1 5.3 5.3 3.6
Heights
H1 H2
1.86 1.58

Dimensions measured in inches.

VMR-1 Reticle

Designed to maximize long distance shooting and ranging abilities, the VMR-1 MOA reticle can be used to effectively determine ranges, holdovers, windage corrections and moving target leads.

Subtension detail for the Diamondback Tactical 4-12x40 with VMR-1 reticle.>

Note
Read the VMR-1 Reticle manual for details on using the reticle for bullet drop compensation and wind drift compensation and ranging.

Rated 1 out of 5 by from Diamondback disappointed Disappointed in the diamondback tactical. First off I like many of the Vortex products with exception and this is one exception. The turrets and mag ring feel cheap. The clicks are hard to discribe, Almost like plastic gears. Tracking adjustment is faulty. Can be several clicks before reticle moves at all, somerhing is seriously wrong, and Defeats the whole purpose of exposeded turrets. Not having adjustment for parallax on a scope designed to be dialed for distance ( when parallax becomes an issue ) just seems silly. The glass is ok for the price but the other shortcomings especially are shamefull. Not sure what the idea was behind this model, But this one is a fail.
Date published: 2018-01-08
Rated 5 out of 5 by from Perfect scope Last fall my my wife and I had the opportunity to go hunting antelope for the first time. About a week before the hunt started the scope on my wife’s gun broke and I had to replace it fast. I ordered a diamondback tactical 4-12 and told the folks I was on a real crunch for time and they helped me out big time. I had the scope fast and we got it set up in time to go out opening day. The scope zeroed fast and and held true. As we’ve played around with it it tracks great and is very clear. I’ve shot out to 700 yards with it and been on an 18 inch plate every time. This is one of the best optics I’ve ever played with for the price point. Can’t recommend higher.
Date published: 2018-03-29
Rated 5 out of 5 by from Great value at this price range. Been debating on a scope for awhile now and what I wanted in it. After much thinking and a few words with my local Shop, I’ve decided to go with the Diamondback tactical over the crossfireII and other scopes on the market as to where a friend stuck with the crossfireII (Both of us were lookin for scopes at the same time) and man I’m so glad I went with this scope, Solid clicks and easy adjustment, love the oversized knobs and make adjusting a breeze. Glass is clear and crisp. Very sweet scope for the Price. Obviously it’s got a fixed parallax and no objective focus but at this price point it does not bother me at all. Just takes a little more work and it’s good.
Date published: 2018-03-08
Rated 5 out of 5 by from Great scope !!! I currently own a PST for my long range gun and it became too heavy to hunt with. So I purchased a Savage 10 in 260 rem for my new hunting rifle. I wanted what i have come to love in my PST 6x24x50 but in a smaller package. The Diamondback Tactical is a perfect fit. I mainly wanted turrets so that I wouldn't have to bother with removing the caps when out in the field. Turret adjustments are solid, easy to zero, and very easy to read. First time out after the scope was zeroed i wanted to see how it would do. I set up and shot 500 yards and was on target in a few shots... moved out to 800 yards and got hitting consistently. Now for the test.. went from 800 to 500 and back to 800.. shot 3 rounds at 500 and adjusted back to 800 for 3 more. All 6 shots hit just as they did before. Was very satisfied with just how well the scope tracked between different yardages. Lens clarity is as clear as my PST. Great job with this scope Vortex !!!
Date published: 2017-07-29
Rated 5 out of 5 by from Great Turret Scope I was building a AR for coyote hunting, and decided to see what I could "get away with" in terms of scope/price. I came across this scope after watching vortex's ruger american rifle video with the 1000 yard shot. This thing has all the features of any high end scope, and functions flawlessly. Makes 600 yard shots with my .223 easy. Turrets are dead on using Vortex's LRBC. Smooth turret adjustments, super easy to zero, clear glass. Would buy again without hesitation. GREAT for the price.
Date published: 2017-11-28
Rated 5 out of 5 by from Excellent Bought this as a cheap stop gap before I bought another Viper PST. I honestly do not think I would change now. Very sleek tube with no fuss. The zero-reset turrets are first class. I regularly shoot at 100m to test my new loads but dialling back up to 750 metres for my regular loads never fails. A 6 - 18 x 50 (still with the same turrets) would be welcome.. I prefer the DB T to the Viper PST now because of it's simplicity.
Date published: 2017-07-10
Rated 5 out of 5 by from Great scope I was looking for a scope that would hold up to mid range shooting. I knew that I'd be using this item for bench shooting and hunting. I zeroed the scope at 200 yards, because I'm shooting a 6.5 creedmoor 140 grain bullet. I was shocked with the clearity of the glass and the quality of this scope. The turrets turn fine with no problem. Very distinctive clicks when adjusting for windage and elevation. I wear glasses, (bifocals) so i was concerned about the eye relief. Much to my surprise, i haven't had any issues acquiring targets. Overall, the scope is worth the money and the warranty is the best. Great solid scope. Eventually, all my rifles will have the diamondback on them.
Date published: 2018-03-29
Rated 5 out of 5 by from Excellent performance and an Excellent Value! I acquired this scope to replace an old scope on my primary hunting rifle. I researched the scope's features and was intrigued by the simple turret controls. The clear glass, waterproof and shockproof features and the best warranty in the business were all features I really appreciated. It all came down to its performance on my first buffalo hunt. The Diamondback tactical 4-12x40 worked to perfection. Bullet placement was critical because I had to take a head shot. I simply adjusted the turret and took the shot. The result: One shot, one buffalo, no damaged meat.
Date published: 2018-03-12
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Can I use this scope with the new Ruger precision rimfire rifle for 22LR bullet? Thank you

Asked by: Primo
Thanks for the question! Yes, this scope would work great on your RPR!
Answered by: Graham at Vortex Optics
Date published: 2018-08-28

i have a savage 6.5 creedmoor would this be a good scope for my gun?

Asked by: Jordan
Absolutely, that's a great optic for 6.5 Creedmoor as you're able to easily dial your elevation.
Answered by: Josh at Vortex Optics
Date published: 2018-08-06

If I was going to mount the Diamondback Tactical 4-12x40 on top of a Thompson Center Venture with a 20MOA rail, what would you suggest for rings?

Asked by: Bill
We need some more information regarding your setup, could you please give us a call at 800-426-0048 Ext. 5.
Answered by: Josh at Vortex Optics
Date published: 2018-07-31

I'm planning on mounting the Diamondback Tactical 4-12x40 on a Thompson Center Venture (.270), and was wondering what rings you would suggest? Thanks in advance.

Asked by: Bill
I recommend a set of our Pro Rings - medium height, .88" for your setup.
Answered by: Josh at Vortex Optics
Date published: 2018-07-27

i'm planning to put a Vortex riflescope on my AR-10 in .308(7.62) with a 20" barrrel what would be the best scope for hunting/long range shooting

Asked by: halo5482
I suggest taking a look at our Razor HD Gen II 4.5-27x56 or our Razor HD 5-20x50.
Answered by: Josh at Vortex Optics
Date published: 2018-06-18

My question is about the total moa adjustment. Is it 70 moa up from the factory 0 position or is it 35 moa, up and down. I had to come up 12 MOA to get a 0 at 100 yards and I'm wondering how much more adjustment I have and what my max potential range is

Asked by: Freddy121389
Thanks for the questions. We advertise that it has 70 MOA of total travel. Every rifle/scope combination is going to align differently and fall in different areas of that travel. Give us a call at 800-426-0048 ext. 5 and we can help you with some ways to figure out your travel.
Answered by: Graham at Vortex Optics
Date published: 2018-06-18

I'm planning to mount this sight on a Remington 700 vtr in 7.62 what rings would work best

Asked by: Quinton
I would recommend a set of our 1" Pro Rings-Medium height for your setup.
Answered by: Graham at Vortex Optics
Date published: 2018-09-05

I am looking to mount a diamondback 4x12x40 on a older tang style Ruger M77. What rings and height do I need to mount.

Asked by: Lawman635
I would recommend going with a set of our 1" Pro Rings Medium Height for your setup.
Answered by: Graham at Vortex Optics
Date published: 2018-05-31
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