The Sightron SIII Long Range 10-50x60mm Riflescope is a high-magnification optical instrument engineered specifically for stationary target shooting and competitive precision disciplines. Built around a 30 mm one-piece aircraft-grade aluminum tube, this second focal plane optic combines a large 60 mm objective lens with a 10–50x magnification range. Sightron's patented ExacTrack erector system maintains constant positive contact within the assembly to prevent zero-drift across its 50 MOA total elevation and windage travel. Fully multi-coated with Zact-7 Revcoat 7-layer coatings, the passive optical system provides clear sightlines and fine point-of-aim definition without reliance on batteries, electrical power, or illumination modules.

Key Features

• Target Dot Reticle: Features non-illuminated, extra-fine crosshairs with a central 0.1 MOA target dot situated in the second focal plane to prevent target obstruction at high zoom.
• Precision Turret System: Employs resettable, finger-adjustable target turrets that adjust at 1/8 MOA per click, offering 10 MOA of travel per turret revolution under protective screw-down caps.
• Patented ExacTrack Technology: Sightron's proprietary erector tube design provides continuous, uniform tracking throughout the full 50 MOA windage and elevation range.
• Zact-7 Revcoat Optical Coatings: Fully multi-coated glass elements maximise light transmission through complex, high-magnification lens groups to improve clarity on distant targets.
• Side-Focus Parallax: Smooth side-mounted parallax turret adjusts focus from 13 yards (~11.9 m) out to infinity to eliminate optical parallax errors.
• All-Weather Construction: Factory nitrogen-purged and O-ring sealed to provide waterproof and fogproof integrity in outdoor competitive shooting environments.

Specifications

• Magnification: 10–50x
• Objective Lens Diameter: 60 mm
• Tube Diameter: 30 mm (one-piece tube; high or extra-high mounting rings typically required for heavy barrel clearance)
• Focal Plane: Second Focal Plane (SFP)
• Adjustment Graduation: 1/8 MOA per click
• Total Windage and Elevation Travel: 50 MOA
• Travel Per Revolution: 10 MOA
• Parallax Adjustment Range: 13 yards to infinity
• Eye Relief: 3.8 to 4.5 inches (96.5 to 114.3 mm)
• Field of View at 100 Yards: 9.6 ft at 10x; 2.2 ft at 50x
• Exit Pupil: 1.2 mm at 50x magnification
• Overall Length: 16.9 inches (429 mm)
• Total Weight: 30.1 oz (~853 g)
• Electrical Requirements: None (fully passive mechanical optical system)

Who is the Sightron SIII 10-50x60mm Riflescope for?

• F-Class rifle competitors — requires precise point-of-impact corrections, which this long-range benchrest riflescope delivers through 1/8 MOA per click target turrets paired with 50 MOA of internal elevation travel.
• 1,000-yard target shooters — benefits from 10-50x magnification and a 60 mm objective lens bell that delivers resolving power on long-range static targets down to a 2.2 ft field of view at full power.
• 50-metre rimfire benchrest shooters — relies on the side-focus adjustment dial that dials parallax out completely starting at 13 yards, allowing precise stationary rimfire target work without focal distortion.

Less suitable for: Target engagements closer than 13 yards (which require dedicated short-focus airgun optics), dynamic PRS or tactical shooting (where a narrow 2.2 ft field of view impairs target transitions and requires lower-magnification 3–15x or 4–20x scopes), mobile backcountry hunts (where the 30.1 oz weight and 16.9-inch length are excessive compared to lightweight hunting scopes under 22 oz), and spring-piston or gas-ram air rifles that produce bi-directional recoil forces.