SIG Sauer Sierra3BDX Rifle Scope w/ Side Focus BDX-R1 Illum Reticle SOSBDX34111

Don’t let its ubiquitous form factor fool you, because hidden inside the Sig Sauer 4.5-14×44 SIERRA3BDX Riflescope are technological innovations that use Bluetooth connectivity to compatible devices that will give you the cool confidence to make a precise shot and ensure an ethical kill.

Anchored on a free app for iOS and Android smartphones, Sig’s Ballistic Data Xchange (BDX) system allows you to bond your mobile device with the scope and one of their KILO laser rangefinders and then pool a slew of information to plot a firing solution that is updated and displayed on the BDX-R1 digital ballistic reticle. The rangefinder gives you range and angle to the target while the app allows you to input the ballistic profile of your round as well as critical environmental data such as temperature and wind direction and speed. All the information is used to calculate an accurate elevation holdover and/or windage adjustment, which is sent to the riflescope. A dot is projected onto the reticle’s crosshairs and all you need to do is place it on the target and fire. The scope can also be used without a rangefinder, utilizing the ballistic profile and environmental data to plot multiple aiming points at various distances. Since the dot is projected onto the reticle, the app adjusts the subtensions to the selected magnifications so they remain accurate through the entire zoom range.

Optically the SIERRA benefits from a wide zoom range and a moderate objective lens that enables you to precisely send shots at long range with the ability to move freely through bushes and brush and stalk closer to your target if you need to. Extra-low dispersion glass and broadband anti-reflection coatings maximize light transmission with virtually zero distortion across the whole field of view with enhanced color fidelity, contrast, and resolution. Capped low-profile turrets adjust at a precise 1/4 MOA per click with 20 MOA of travel per rotation and an adjustment range of 55 MOA. To withstand the repeated recoil of regular use and to provide the adjustment room required for the windage and elevation turrets, the one-piece maintube is made of lightweight but strong aluminum and is robust at 30mm in diameter. The housing is nitrogen filled and O-ring sealed to an IPX7 rating to make it waterproof, submersible, and resistant to internal fogging.

Optical Performance

• Wide 4.5-14x zoom magnification is ideally suited for mid ranges on lower power with the ability to place accurate shots at long range
• 44mm objective provides the light gathering required for use in challenging conditions without adding excessive weight and bulk for stalking and moving through brush
• Extra-low dispersion (ED) and high-transmittance (HT) glass provides enhanced light transmission to produce bright and clear high-contrast views with accurate color
• Highly efficient, ultra-wide broadband, anti-reflection SpectraCoat lens coatings reduce surface reflections across the entire visible spectrum, improving light transmission
• 20-foot field of view at 100 yards on 4.5x power, 7-foot on 14x

BDX-R1 Digital Ballistic Reticle Details

• Second focal plane placement maintains a consistent reticle size regardless of the magnification selected
• Digital aiming point placement remains accurate at all magnifications
• 10 adjustable brightness settings ensure clear aiming point visibility in all light conditions
• Non-illuminated duplex crosshair design leaves most of the field of view open, clear, and uncluttered
• BDX information is automatically transferred to the riflescope and clear aiming points are placed on the hairs to indicate an adjusted elevation holdover and windage adjustment
• Place the dot on the target and fire for precise first-shot accuracy
• Ability to configure multiple holdover points that are all displayed to eliminate turret adjustments or other distance calculations
• Use without rangefinder to configure ballistic information and set a reticle profile with multiple holdover distances out to 800 yards
• Blue LED on the magnification ring blinks each time the reticle is updated

Technology

Ballistic Data Xchange System

• Designed to provide hunters with the ability to take the most accurate and ethical shot
• Requires compatible rangefinder
• Riflescope connects to a smartphone running the Sig BDX app for Android or iOS
• Receives and makes automatic adjustments to the reticle aiming point placement to improve shot accuracy
• Through app, user can input round, load, muzzle velocity, and other ballistic information that is used to calculate aiming point placement
• User can choose to input environmental conditions, including temperature, wind speed and direction, and humidity that are used to adjust aiming point and improve accuracy
• Wireless Bluetooth connectivity with secure PIN accessibility to eliminate the possibility of interference with other Sig BDX apps and rangefinders being used by other hunters in the field or at the range

KinETHIC System

• Calculates the maximum effective hunting range
• Indicates when the round’s energy may not be sufficient to ensure an ethical kill
• Helps to ensure an ethical hunt by indicating when a given round’s energy drops below a threshold
• Threshold is set by the user in the BDX app
• Based on the ballistic profile provided and distance of the shot

Auto LevelPlex System

• Can be activated in the field during a hunt
• Ensures the user is holding the rifle level to improve shot accuracy
• When activated, the system automatically increases digital level sensitivity for longer shots

LevelPlex Digital Anti-Cant System

• Utilizes an internal digital level that is more accurate than conventional bubble levels
• In-view indicators enable the user to precisely optically align the scope to their rifle and remove unwanted cant from the system
• ±0.5° of accuracy ensures the horizontal and vertical axes of the reticle are perfectly parallel to the rifle

MOTAC Motion-Sensor System

• Immediately powers up reticle illumination when it senses motion
• Powers reticle down when it does not detect movement for 2 minutes to extend battery life