Sightron 36×45 SIII ED Riflescope (Fine Crosshair Reticle, Matte Black)

Description

Eliminate mechanical tracking backlash with Sightron 36×45 SIII ED Riflescope optics built for dedicated 100-yard and 200-yard rimfire and centerfire benchrest matches. Built with a 30mm tube, 1/10 MOA clicks, and 50 MOA elevation travel, this optic incorporates the Fine Crosshair reticle. Fixed 36x magnification resolves tiny bullet holes, though lack of optical zoom restricts wide field scanning.

Constructed from single-piece 6061-T6 structural aluminum, the heavy 30mm monotube prevents flex under heavy recoil cycles. Japanese extra-low dispersion ED glass lenses feature proprietary Zact-7 multi-coatings for exceptional light transmission and sharp target contrast. Measuring 15.0 inches and weighing 20.5 ounces, this Sightron benchrest scope features nitrogen gas purging that meets IPX7 waterproof immersion standards under field squalls.

Key Features of Sightron 36×45 SIII

Benchrest competitors buy Sightron 36×45 SIII riflescope systems to pinpoint 100-yard paper target rings without thick crosshair obstruction. The patented ExacTrack erector mechanism prevents point-of-impact shift across extreme elevation adjustments.

• 30mm structural aluminum chassis supports 50 MOA of internal elevation movement
• 36x fixed magnification eliminates erector zoom errors across long shooting sessions
• 45mm extra-low dispersion ED objective lens eliminates purple chromatic edge fringing
• 1/10 MOA target turrets provide precise tactile and audible click increments
• 36×45 SIII ED Fine Crosshair reticle isolates distant bullseyes with surgical aim
• Second focal plane construction preserves hairline crosshairs at extreme zoom
• Side parallax focus wheel tunes optical sharpness from 10 yards out to infinity
• ExacTrack erector system prevents point-of-impact shift across elevation adjustments

Erector Mechanical Precision

The patented ExacTrack erector assembly maintains constant contact pressure against lead screws to deliver tracking accuracy within 1 percent across the 50 MOA travel range. Certified to withstand 1000G shock loads, this Sightron erector absorbs heavy benchrest recoil without zero displacement. Operating reliably between -20°F and 140°F, this mechanism preserves mechanical alignment through intense match heat.

Mount Clearance Guide

The 6.0-inch center tube section provides ample room for 30mm rings on long-action heavy target actions. Torque ring cap screws to 16 in-lbs, and tighten base mount screws to 42 in-lbs. The 3.6-inch eye relief provides ample clearance on heavy recoiling target calibers, while the 45mm objective bell fits medium rings over target barrel contours.

Handling Protocols Guide

The side parallax wheel operates with ultra-smooth rotational drag, allowing micro-fine focal adjustments without moving rifle balance on bench rests. This 20.5-ounce fixed-power precision optic is not built for mobile hunting stalks in brush, nor for close-quarters carbine competitions.

• Clean dust from objective ED glass surfaces using optical microfiber wipes every 200 rounds
• Check 30mm scope ring screw tension with a torque driver every 300 rounds
• Examine side-focus parallax knob motion and inspect turret seals every 12 months

Sightron Crate Manifest

Sightron covers optical components and mechanical assemblies with a lifetime warranty against manufacturing defects. The factory crate includes the riflescope, screw-in sunshade, protective lens caps, tall target knobs, microfiber lens cloth, user manual, and certified optical inspection documentation.