![]() We also wanted a zero stop otherwise, you have to be cognizant of dialing, in order to be sure to return the turret to its original zero.īut as a versatile scope, and one that can be used with the full array of BDX-compatible components or by itself, the SIERRA6 is a very good effort. Without the BDX compatibility to help with holds, we wanted more references in the reticle. Compared with a shooter who either holds for distance and wind or can make fast turret adjustments, this is a slow system. In order to engage targets, the shooter must first range the distance, then receive the ballistic solution, and make the holdover adjustment before firing. If we have quibbles it’s that the BDX system is relatively slow for competition. 300 Win Mag rifles, and the scope tracked the respective ballistics quickly and precisely. When connected to the BDX system, the scope swaps seamlessly between rifles. ![]() We liked the 10-step illumination, as well as SIG’s responsive LevelPlex anti-cant indicator. ![]() The capped turrets turn with authority and unlock 71.75 MOA of both elevation and windage adjustment. The MOA-based, Christmas-tree style GEN II BDX-R2 reticle in the first focal plane has a decent amount of references, though we had to lower the magnification to engage targets smaller than about 2 MOA at distances beyond 1,000 yards. The 34mm scope can also be used with a BDX-equipped rangefinder to use custom ballistics curves from Applied Ballistics in the field, even when out of range of phone service.Īdditionally, the scope is plenty useable even when the battery goes dead. The SIERRA6 can be linked to SIG’s excellent mobile app as well as to a “smart” rangefinder, but unlike the initial BDX, this version can also operate as a standard precision scope, allowing shooters to utilize any of a number of ballistics profiles to match their bullet dynamics. The SIERRA6, assembled in the Philippines, has many of those same attributes of its predecessor, which was configured more for hunting than target shooting. Back in 2018, we gave the SIERRA3 both our Editor’s Choice and Great Buy award for its innovative operation-the scope communicates via Bluetooth with a laser rangefinder, which gets its prompts in turn from a mobile app-and accessible price. We’ve been eagerly awaiting the arrival of a precision-styled smart scope from SIG since the inaugural BDX system swept us off our feet two years ago. Still, with Bushnell’s excellent warranty and extremely accessible price (we found this for sale at a street price of $1,200), this is a bombproof, tight, and versatile choice for shooters who want a precision scope for a variety of purposes. But the Maven’s coatings are marvelous, and all testers reported excellent color rendition and a bright, high-contrast image. The Japanese-sourced glass is good, though we were a little underwhelmed with its middle-of-the-pack low-light performance. The RS.4 has an excellent illumination system that lights up the entire reticle in various intensities of either red or green. The pewter-colored knurling on all turning surfaces is excellent, and makes for good grip and positive controls, though the test team was unanimous in complaining that the parallax knob required a torque wrench to turn. The Maven’s mechanical zero stop (it’s accessed below a relatively hidden threaded cap on both turrets) is strong, simple, and easy to set with a small Allen wrench. We were able to milk out 32 mils of elevation adjustment, a little less than advertised, but still plenty of range for most shooters. The oversized turrets turn with authority and precision and deliver 10 mils of adjustment per revolution. The glass is among the best in the test the Japan-sourced Tract finished near the top in our low-light test and one evaluator noted the extremely vivid colors that the scope delivers to the eye. They turn with authority and precision, but without the extra effort that some over-tight scopes require. The magnification, parallax, illumination, and turret operation is like handling a well-made car. Well, all those qualities that were developed over the years at Nikon have their fullest expression in this remarkable precision scope. ![]() Those of you who have used Nikon’s scopes know their buttery controls, shooter-friendly reticles and configurations, and their great value. The principles of Tract, a direct-to-consumer brand, are alumni of Nikon’s sports optics division, which announced earlier this year that it was closing its riflescope division. Before I dive into the astonishing attributes of this extreme long-range riflescope, a bit of backstory.
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