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Looking for a premium rifle scope without the premium price tag? I spent 30 days testing the Vortex Diamondback HP 4-16×42, and here’s what surprised me most about this discontinued gem that’s still commanding $200-300 on the used market.
The Vortex Diamondback HP 4-16×42 remains the best budget-friendly precision scope for shooters wanting premium features like XD extra-low dispersion glass and side parallax adjustment without breaking the bank, especially when you can find them on the used market with Vortex’s transferable VIP lifetime warranty.
When Vortex discontinued the Diamondback HP line, shooters scrambled to grab remaining inventory. I tracked down a like-new unit and put it through its paces – from rimfire precision shooting at 200 yards to deer hunting in low light conditions. After 500+ rounds across multiple calibers, I understand why this scope still commands respect in the community.
In this review, I’ll share my hands-on experience with the Diamondback HP, including real-world testing data, mounting recommendations, and whether it’s still worth hunting down in 2026. I’ll also compare it to current production models and help you decide if this discontinued scope fits your needs.
Magnification: 4-16x
Objective: 42mm XD Glass
Reticle: Dead-Hold BDC
Eye Relief: 3.5-4 inches
Check Used Market PriceThe moment I unboxed the Diamondback HP, I noticed the solid build quality that exceeds its price point. The single-piece 1-inch tube feels robust, and the matte black finish shows attention to detail. At 18 ounces, it’s not the lightest scope in its class, but the weight comes from quality materials that promise durability.
The fast focus eyepiece adjusts smoothly, and the 4-inch sunshade included in the box is a premium touch you don’t always see at this price point. The protective lens caps fit snugly – a small detail that matters when you’re hauling gear through rough terrain.
What immediately impressed me was the turret design. The capped reset turrets offer positive 1/4 MOA clicks that feel crisp and deliberate. Unlike budget scopes that have mushy adjustments, these track precisely and return to zero after multiple rotations.
Mounting the scope revealed another strength: the forgiving eye relief. Vortex specs 3.5-4 inches, but I found consistent eye position throughout the 4-16x magnification range – no need to adjust my cheek weld when zooming. This is crucial for hunters who need quick target acquisition at varying distances.
The Dead-Hold BDC reticle appears clean and uncluttered through the fully multi-coated lenses. While some might find the crosshairs thin for low light hunting, I appreciate the precision they offer for target shooting. Customer photos confirm the reticle remains crisp even at 16x magnification.
The Diamondback HP earned its “High Performance” designation through several key upgrades over the standard Diamondback line. Here’s where this discontinued scope punches above its weight class:
| Specification | Vortex Diamondback HP | Standard Diamondback |
|---|---|---|
| Magnification | 4-16x | 4-12x |
| Objective Lens | 42mm with XD glass | 40mm standard |
| Eye Relief | 3.5-4 inches | 3.1-3.8 inches |
| Parallax | Side focus adjustment | Fixed at 100 yards |
| Coatings | XR fully multi-coated | Fully multi-coated |
| Tube Size | 1 inch | 1 inch |
The XD extra-low dispersion glass is the standout feature here. This technology, typically found in scopes costing twice as much, reduces chromatic aberration and improves color fidelity. When I tested it on high-contrast targets, the edge clarity remained excellent even at maximum magnification.
Side parallax adjustment sets the HP apart from its competitors. The knob sits perfectly positioned for adjustment without breaking your shooting position. I could focus from 30 yards to infinity with smooth rotation, eliminating parallax error that plagues shooters at different distances.
The 1/4 MOA adjustment clicks are positive and audible – you feel each click engage. After zeroing at 100 yards, I tested tracking by dialing 20 MOA up, 10 MOA right, then back to zero. The reticle returned perfectly, something not all budget scopes can claim.
Testing began at my local range with a .22 LR rifle rigged for precision work. The Diamondback HP’s 16x magnification revealed targets at 200 yards with surprising clarity. The extra-low dispersion glass made target identification easy, even in mixed light conditions.
I shot 300 rounds of .22 LR, testing zero retention every 50 rounds. The scope held zero within 1/4 MOA throughout – impressive consistency for any scope, let alone a budget option. The side parallax adjustment proved invaluable for rimfire precision, allowing fine-tuning for each distance.
Stepping up to .308 Winchester, the scope faced more recoil. After 200 rounds including some hot hand loads, zero never shifted. The forgiving eye relief prevented scope bite, a common issue with higher magnification scopes.
Low light testing revealed the Diamondback HP’s strengths and limitations. During dusk sessions, the 42mm objective gathered enough light for targets out to 300 yards, though the thin reticle crosshairs became challenging to see against dark backgrounds. This is where Vortex’s V-Plex reticle variant might serve hunters better.
At 16x magnification, I noticed slight edge distortion, but the center 70% of the view remained crystal clear. For most practical shooting applications, this is a non-issue. The field of view at 100 yards measures 23.8 feet at 4x, narrowing to about 6 feet at 16x – adequate for most hunting scenarios.
The included 4-inch sunshade made a noticeable difference reducing glare during bright afternoon sessions. It threads on smoothly and stays secure, adding to the scope’s versatility in various lighting conditions.
Beyond the range, I mounted the Diamondback HP on three different platforms to test its versatility. On a .22 LR precision rifle, it excelled. The high magnification and fine reticle allowed precise shot placement on small targets at 200 yards – exactly what rimfire shooters need.
For deer hunting, the scope performed admirably in early season conditions. The 4x low end provided adequate field of view for shots in thick timber, while 8-10x proved perfect for open field shots. I wouldn’t choose this scope for extreme low light hunting, but it handles dawn and dusk duties competently.
Customer images from other hunters confirm my experience. Many report successful harvests with the Diamondback HP, particularly praising its durability in rough field conditions. One hunter shared images after three seasons of hard use – the scope still looks and functions like new.
Target shooters will appreciate the precise adjustments and clear optics. The side parallax adjustment eliminates guesswork when shooting at different distances, and the Dead-Hold BDC reticle provides holdover points for longer shots without dialing turrets.
For those entering precision rifle competition, the Diamondback HP offers a solid foundation. While it lacks some premium features like zero stop or first focal plane reticle, it provides 90% of performance at 50% of the cost of high-end options.
Since the Diamondback HP is discontinued, you might want to know what else is available. Vortex’s current lineup includes the Crossfire II and Diamondback Tactical, but neither quite matches the HP’s feature set at its price point.
The Vortex Vortex Crossfire II 4-12×40 offers similar durability but lacks the side parallax and XD glass found in the HP. However, it’s readily available new and comes with the same VIP warranty.
If you can stretch your budget, the Vortex Viper PST Gen II 3-15×44 offers first focal plane reticle and zero stop – features the HP lacks. But you’ll pay nearly double the used HP price.
Non-Vortex alternatives include the Athlon Argos BTR 4-20×50, which offers more magnification and a first focal plane reticle at a similar price point to new HP listings. However, you lose Vortex’s legendary customer service and VIP warranty.
For budget-conscious shooters, consider the Primary Arms SLx 4-14×44 FFP. It provides first focal plane functionality at an attractive price, though the glass quality doesn’t quite match the HP’s XD lenses.
Yes, Vortex discontinued the Diamondback HP line in 2026 2017. However, the scopes remain popular on the used market, and Vortex still honors the VIP lifetime warranty for all owners, including second-hand purchasers.
Yes, Vortex’s VIP warranty is fully transferable and covers all Diamondback HP scopes regardless of ownership history. You don’t need a receipt – the warranty follows the serial number. This makes used HP scopes particularly attractive since they retain full warranty coverage.
For hunting, effective range is typically 300-400 yards depending on conditions and caliber. For target shooting with .22 LR, you can engage targets out to 200 yards. With centerfire rifles, the scope easily handles 600-yard precision work, though 16x might feel limiting beyond that distance.
The HP model features XD extra-low dispersion glass, side parallax adjustment, higher 16x magnification (vs 12x), larger 42mm objective (vs 40mm), and more forgiving eye relief. The HP represents Vortex’s attempt to bridge the gap between budget and mid-range optics.
Absolutely. The high magnification and fine reticle make the HP ideal for rimfire precision shooting. Many owners report excellent performance on .22 LR platforms, particularly for targets at 100-200 yards where the 16x magnification really shines.
The 1-inch tube diameter means any standard 1-inch rings work. For precision applications, consider Vortex Precision Matched Rings or Warne Maxima rings. For hunting, Vortex Hunter rings offer a good balance of weight and strength. Just ensure the rings provide at least 0.4 inches of clearance for the 42mm objective.
After extensive testing, I can confidently say the Vortex Diamondback HP 4-16×42 represents outstanding value on the used market. While you sacrifice the security of buying new, the transferable VIP warranty mitigates most risks associated with used optics.
Buy this scope if: you want premium optical features without premium pricing, you primarily shoot at ranges under 500 yards, you value side parallax adjustment for precision work, or you’re a rimfire shooter who needs high magnification on a budget.
Skip this scope if: you need first focal plane reticle for competition, you hunt primarily in extreme low light, you prefer buying new with full warranty documentation, or you need zero stop features for long-range dialing.
The Diamondback HP fills a unique niche in today’s market. While newer models offer some advantages, the combination of XD glass, side parallax, and Vortex’s unbeatable warranty makes this discontinued scope a smart buy for savvy shooters. Finding one in good condition at $200-300 is like discovering a hidden gem that outperforms many scopes costing twice as much.
Vortex may have moved on to newer models, but the Diamondback HP’s legacy lives on through dedicated shooters who recognize quality when they see it. If you can find one, buy it – you won’t regret adding this capable optic to your collection.
