Trijicon Tenmile TM5056 5-50x56mm Rifle Scope, 34 mm Tube, Second Focal Plane (SFP) Review

It’s Time to Talk About the Trijicon Tenmile TM5056 5-50x56mm Rifle Scope, 34 mm Tube, Second Focal Plane (SFP)

For years, I’ve been hunting for an optic that bridges the gap between extreme magnification for spotting distant targets and practical, reliable performance across various conditions. My search led me to the Trijicon Tenmile TM5056 5-50x56mm Rifle Scope, 34 mm Tube, Second Focal Plane (SFP). This isn’t just another scope; it’s a precision instrument built for those who demand clarity and consistency at distances that often feel theoretical to many shooters.

The catalyst for this particular acquisition was a nagging frustration with my existing long-range setup. While it offered decent magnification, the edge clarity and light transmission at higher powers left much to be desired, especially during those crucial dawn and dusk shooting windows. I needed something that could resolve fine details at extreme ranges without turning the target into a blurry, dark silhouette.

My initial impression upon unboxing this Trijicon optic was one of robust engineering. The aircraft-grade aluminum construction felt substantial, and the matte finish exuded a tactical yet refined aesthetic. Unlike some other high-magnification scopes that can feel overly bulky, this one struck a balance, suggesting it wouldn’t feel like a lead anchor on my rifle.

I had considered a few other high-power options, including some European brands known for their optical prowess, but the reputation for ruggedness and the specific feature set of this Trijicon model ultimately swayed my decision. The immediate feeling was one of quiet confidence; this scope felt built to withstand the rigors of serious use.

Real-World Testing: Putting Trijicon Tenmile TM5056 5-50x56mm Rifle Scope, 34 mm Tube, Second Focal Plane (SFP) to the Test

First Use Experience

My initial testing grounds were the familiar, windswept plains of my local long-range shooting area. I mounted the Trijicon Tenmile TM5056 5-50x56mm Rifle Scope, 34 mm Tube, Second Focal Plane (SFP) on a .300 PRC rifle, specifically chosen for its flat trajectory and ability to push rounds to significant distances. The setup process was straightforward, with the 34 mm tube providing ample adjustment range for dialing in my zero.

During those first few range sessions, I was immediately impressed by the edge-to-edge clarity that Trijicon advertises. Even at 30x, fine details like the edges of bullet holes at 300 yards were crisp and discernible. The parallax adjustment was smooth and precise, allowing me to fine-tune focus from 10 yards all the way to infinity without any perceptible lag or stiffness.

One minor quirk I noticed early on was the tight eye-box at the extreme upper end of the magnification range. While the 50x power is there, achieving a full, clear sight picture becomes incredibly demanding, requiring precise head placement. This is a common trade-off with such high magnification, but it was something to be mindful of for rapid target acquisition at those extreme powers.

Extended Use & Reliability

After several months of consistent use, encompassing multiple shooting days ranging from brisk autumn mornings to late winter afternoons, the Trijicon optic has proven itself to be a steadfast performer. It’s been exposed to light dust, the occasional spray of mud from an errant shot, and the chilling effects of sub-freezing temperatures without any degradation in performance. The waterproof and fogproof ratings are not just marketing jargon; this scope has endured damp conditions without a hint of internal fogging.

Maintenance has been refreshingly simple. A quick wipe-down of the exterior with a microfiber cloth and a gentle cleaning of the lenses with an appropriate optic solution are all that’s needed. The ruggedized design and aircraft-grade aluminum construction mean that minor bumps and scrapes are shrugged off without affecting internal mechanisms.

Compared to previous high-magnification scopes I’ve used, including some that cost significantly more, this Trijicon model holds its own remarkably well. The light transmission remains excellent even when dialing up to 40x, a critical factor for spotting targets or observing bullet impacts at long distances. While the absolute highest magnification has its challenges, the 30x to 40x range offers an almost perfect blend of magnification and usability, surpassing many competitors.

Breaking Down the Features of Trijicon Tenmile TM5056 5-50x56mm Rifle Scope, 34 mm Tube, Second Focal Plane (SFP)

Specifications

The Trijicon Tenmile TM5056 5-50x56mm Rifle Scope, 34 mm Tube, Second Focal Plane (SFP) is built on a substantial 34 mm tube, providing a generous 30mm of windage and elevation adjustment. This increased adjuster range is crucial for long-range shooting, allowing you to dial for significant bullet drop and windage corrections without running out of travel. The 56mm objective lens diameter is standard for this class of scope, maximizing light gathering capabilities.

Its Second Focal Plane (SFP) reticle design means the reticle size remains constant regardless of magnification. This is a key consideration for shooters who prefer to use their reticle for range estimation or holdovers at specific magnifications. The scope offers a 10-yard to infinity parallax adjustment, ensuring a sharp image at any practical shooting distance.

The optic features an LED illumination system with user-selectable brightness settings. It requires a single CR2032 battery, offering a respectable 39-94 hours of battery life depending on the setting. Constructed from 6061-T6 aluminum, the scope measures 16 inches in length and weighs 38.4 ounces, making it a robust but not excessively heavy optic for its power class.

Performance & Functionality

At its core, the Trijicon Tenmile TM5056 5-50x56mm Rifle Scope, 34 mm Tube, Second Focal Plane (SFP) excels at delivering a clear and bright image across its usable magnification range. The fully multi-coated lenses are the star of the show here, providing excellent light transmission that translates into a bright and detailed sight picture, even in low-light conditions. Being ED (Extra-low Dispersion) glass, it significantly reduces chromatic aberration, making it easier to distinguish subtle details.

The scope shines brightly in the 30x-40x range, where the eye-box is forgiving, and the image remains exceptionally sharp. Spotting 6.5mm bullet holes at 500 yards was readily achievable with this optic. However, pushing the magnification to the full 50x introduces challenges. The eye-box becomes incredibly tight, demanding meticulous head placement, and the image noticeably darkens, making sustained observation more difficult. This upper limit is more for spotting than for precise aiming under pressure.

The windage and elevation turrets are crisp and precise, offering tactile and audible clicks that inspire confidence. The zero stop insurance is a welcome feature, preventing accidental over-rotation and allowing for quick return to zero after dialing adjustments. The included protective caps are also a nice touch, ensuring the turrets remain protected when not in active use.

Design & Ergonomics

The build quality of the Trijicon Tenmile TM5056 5-50x56mm Rifle Scope, 34 mm Tube, Second Focal Plane (SFP) is undeniably premium. The matte black finish is durable and non-reflective, blending well with most rifle platforms. The adjustment turrets are well-machined, with aggressive knurling that provides a secure grip, even with gloves on or when hands are cold.

The repositionable magnification lever is a thoughtful ergonomic addition. It allows for customization to different shooting stances and rifle configurations, making it easier to adjust magnification quickly without breaking cheek weld. The diopter adjustment ring for user prescription accommodation is also a practical feature for those who need it, offering a clear view tailored to individual eyesight.

While the overall design is excellent, the previously mentioned tight eye-box at maximum magnification is the primary ergonomic challenge. This isn’t a flaw of the design itself but rather an inherent characteristic of such extreme magnification in a second focal plane scope. The sheer power packed into this optic demands a level of user engagement to maintain optimal viewing.

Durability & Maintenance

Trijicon’s reputation for building durable optics is well-earned, and this Tenmile scope is no exception. The 6061-T6 aluminum body is engineered to withstand significant abuse, tested to military standards, according to their specifications. This robust construction inspires confidence for use in harsh field conditions.

Maintenance is as straightforward as cleaning any premium optic. The lenses are coated for protection and ease of cleaning, but it’s always best to use appropriate tools and solutions to avoid scratching. The sealing and internal nitrogen purging ensure it remains waterproof (up to 10 ft) and fogproof, critical for reliability in unpredictable weather.

While I haven’t subjected it to extreme trauma, the scope has survived routine handling and transport without any visible issues. The mechanisms feel solid, and there are no signs of play or looseness in the turrets or magnification ring after extended use. It feels like an optic that will perform reliably for many years.

Accessories and Customization Options

The Trijicon Tenmile TM5056 5-50x56mm Rifle Scope, 34 mm Tube, Second Focal Plane (SFP) comes with the essential accessories needed to get started. It includes protective lens caps to shield the objective and ocular lenses from dust, scratches, and impacts. The inclusion of a repositionable magnification lever is itself a form of customization, allowing the shooter to tailor its fit.

While Trijicon doesn’t typically bundle a vast array of accessories with their high-end optics, the 34 mm tube diameter opens up a world of aftermarket mounting solutions. This standard size ensures compatibility with virtually any high-quality scope rings or mounts from reputable brands like Nightforce, Seekins Precision, or Warne. The SFP reticle design allows for a wide range of reticle choices (though this specific model is noted as having options for milling or holdover reticles), catering to different shooting disciplines and preferences.

Pros and Cons of Trijicon Tenmile TM5056 5-50x56mm Rifle Scope, 34 mm Tube, Second Focal Plane (SFP)

Who Should Buy Trijicon Tenmile TM5056 5-50x56mm Rifle Scope, 34 mm Tube, Second Focal Plane (SFP)?

This optic is ideally suited for serious long-range shooters, competition marksmen, and big game hunters who frequently engage targets at distances beyond 500 yards. It’s for individuals who value optical quality and reliability above all else and require the capability to spot distant details. If you’re frequently tasked with identifying small targets or confirming hits at extreme ranges, this Trijicon scope will be an invaluable tool.

However, those who primarily engage in medium-range shooting or value speed and ease of use at lower magnifications might find the extreme top end of its power range to be overkill and perhaps even a hindrance. Shooters operating on a tighter budget might also want to explore more accessible options. For those needing a reliable, high-magnification optic for PRS-style competitions, varmint hunting, or precise long-range plinking, this is a compelling choice.

A high-quality bipod is almost a mandatory accessory for utilizing the higher magnifications effectively, ensuring a stable shooting platform. Additionally, a good spotting scope can complement this optic, allowing you to survey a wider area or observe targets without needing to adjust your rifle’s magnification constantly. Ensure you have robust scope rings to accommodate the 34 mm tube and its substantial mounting requirements.

Conclusion on Trijicon Tenmile TM5056 5-50x56mm Rifle Scope, 34 mm Tube, Second Focal Plane (SFP)

The Trijicon Tenmile TM5056 5-50x56mm Rifle Scope, 34 mm Tube, Second Focal Plane (SFP) is a powerful and exceptionally well-built optic that delivers on its promise of extreme magnification with impressive clarity. While the absolute highest power settings come with inherent usability challenges, the scope offers a superb and highly functional viewing experience in its most practical magnification range. The combination of excellent glass, precise adjustments, and Trijicon’s renowned durability makes it a worthy investment for dedicated long-range enthusiasts.

Considering its performance, build quality, and the sheer optical advantage it provides at distance, the $2109.00 price tag, while substantial, feels justified for the capabilities it unlocks. This is not a scope for casual shooters; it’s a precision instrument designed for those who demand the best for extreme range engagements.

I can confidently recommend this optic to anyone who needs the magnification and clarity to extend their effective shooting range significantly. If you’re looking to push the boundaries of your long-range capabilities and demand unwavering performance, the Tenmile TM5056 is an excellent choice that will not disappoint.