Sig Sauer Sierra 6 BDX 2 2-12x 40mm Black Rifle Scope Review

My first impression of Sig Sauer Sierra 6 BDX 2 2-12x 40mm Black Rifle Scope

The Sig Sauer Sierra 6 BDX 2 2-12x 40mm Black Rifle Scope promises to bring intelligent holdover to the fingertips of hunters and marksmen. Sig Sauer aims to combine quality glass with their BDX (Ballistic Data Xchange) technology, a feature I was eager to explore. For years, I’ve relied on rangefinders and ballistic charts, a process ripe for simplification in the field.

I was looking for a scope that offered both excellent glass clarity and integrated ballistic solutions. Too often, I’ve seen scopes excel in one area but fall short in the other. The Sig Sauer Sierra 6 BDX presented itself as a potential solution to this common problem.

Unboxing the scope, I immediately noted its solid construction. The matte black finish looked durable, and the weight, at 21.4 ounces, felt appropriate for its size. The scope definitely felt more substantial than some budget optics I’ve handled.

Compared to my Leupold VX-3i 3.5-10x40mm, which is a benchmark for clear glass at a reasonable price, the Sierra 6 added noticeable bulk. However, my Leupold lacks any sort of electronic assistance. I also considered the Vortex Viper PST Gen II 2-10×32, known for its excellent features for the money, but wanted to test Sig Sauer’s BDX system specifically.

My first impression was one of cautious optimism. I was excited by the promise of the BDX system, but a bit apprehensive about the potential for electronic complexity to compromise the core function of a riflescope: seeing the target clearly. I hoped it lived up to the hype, considering its price tag of $929.99.

Real-World Testing: Putting Sig Sauer Sierra 6 BDX 2 2-12x 40mm Black Rifle Scope to the Test

First Use Experience

My first outing with the Sierra 6 was at my local shooting range, sighting in a .308 hunting rifle. The range offered distances out to 300 yards, a good starting point. I tested it under clear skies with a slight breeze.

The BDX system required a little initial setup, pairing it with a Sig Sauer BDX rangefinder. Once paired, the scope automatically provided a holdover point when ranging the target. I quickly appreciated how this eliminated the need to consult ballistic charts or make manual adjustments.

After a few adjustments, I was consistently hitting targets at 100 and 200 yards. The only issue I encountered was a slight lag in the BDX system updating the holdover point after ranging. I learned to wait a second or two to ensure the reticle settled on the correct aiming point.

Extended Use & Reliability

Over several months, I used the Sierra 6 during deer season in the Pennsylvania mountains. It was exposed to rain, snow, and temperatures ranging from 20°F to 50°F. The scope held zero consistently and the BDX system continued to function reliably.

After rigorous use, the finish showed a few minor scratches, but nothing significant. I mostly used a lens cloth to clean the glass, which kept it clear. I found the battery life to be adequate, requiring replacement after approximately two hunting seasons.

Compared to my previous experiences with non-BDX scopes, the Sierra 6 definitely simplified long-range shots in hunting scenarios. It’s not a replacement for knowing your ballistics, but it definitely speeds things up in situations where time is of the essence. It outperformed my expectations in adverse weather.

Breaking Down the Features of Sig Sauer Sierra 6 BDX 2 2-12x 40mm Black Rifle Scope

Specifications

The Sig Sauer Sierra 6 BDX 2 2-12x 40mm Black Rifle Scope features a magnification range of 2-12x, offering versatility for both close-quarters and longer-range engagements. Its 40mm objective lens provides a good balance between light gathering and scope size. The field of view ranges from 52.50 feet at 2x to 8.70 feet at 12x, both measured at 100 yards.

Eye relief is a comfortable 3.70″ – 3.90″, minimizing the risk of scope bite. The 30mm tube diameter allows for ample adjustment range and provides a robust mounting platform. Weighing in at 21.40 oz, it adds noticeable weight to the rifle but is not excessively heavy.

The scope features an illuminated BDX-R2 reticle, designed for use with Sig Sauer’s BDX system. Adjustments are made in .25 MOA increments, offering precise zeroing and holdover adjustments. These specifications combine to create a capable optic for hunting and recreational shooting.

Performance & Functionality

The Sierra 6 excels in providing accurate holdover information in real-time via the BDX system. When paired with a Sig Sauer BDX rangefinder, the scope automatically adjusts the illuminated aiming point based on the target’s distance. This allows for quick and accurate shots without having to manually adjust turrets or estimate holdover.

The scope’s glass is clear and bright, providing a crisp image even in low-light conditions. One weakness is the reliance on the BDX system; without a paired rangefinder or functioning batteries, the scope loses its primary advantage. The BDX system met my expectations but could be improved by reducing the lag time between ranging and holdover update.

Design & Ergonomics

The Sierra 6 is constructed from high-quality materials and feels solid in hand. The matte black finish is durable and resistant to scratches and wear. The scope’s weight is noticeable but contributes to its overall feeling of quality.

The turrets are easy to grip and adjust, providing audible and tactile feedback with each click. There is a slight learning curve associated with setting up and using the BDX system. The scope is relatively user-friendly once you understand the basics.

Durability & Maintenance

The Sierra 6 is built to withstand the rigors of field use. Its robust construction and weather-resistant design should ensure it lasts for many years. Regular cleaning of the lenses with a microfiber cloth is generally sufficient for maintenance.

The scope’s electronic components add a layer of complexity. However, with proper care and battery management, these components should not significantly impact its long-term reliability. This scope is not designed for user repair, any issues should be handled by Sig Sauer.

Accessories and Customization Options

The Sierra 6 comes with lens covers and a basic manual. Its primary customization option is the BDX system, which can be paired with various Sig Sauer BDX rangefinders. The 30mm tube diameter ensures compatibility with a wide range of aftermarket scope rings and bases.

The scope does not offer other customization options such as interchangeable turrets or reticles. The focus is on leveraging the BDX system. Accessories and modifications are therefore somewhat limited.

Pros and Cons of Sig Sauer Sierra 6 BDX 2 2-12x 40mm Black Rifle Scope