ZeroTech Optics 3-12x44mm Thrive PHR-3 Riflescope: Technical Details and Specifications

Overview

The ZeroTech Thrive 3-12x44mm SFP PHR 3 Riflescope is a mid-range hunting rifle scope manufactured by ZeroTech Optics, designed for hunters seeking reliable accuracy and practical functionality in varied hunting conditions. This scope represents an entry-level to mid-range optic with versatile performance characteristics suitable for general hunting applications.

Magnification and Optical Specifications

Magnification Range

The riflescope features a 3-12x variable magnification range, allowing shooters to adapt to different engagement distances and hunting scenarios. This range provides:

• Low magnification (3x): Wide field of view for closer targets and faster target acquisition
• High magnification (12x): Enhanced detail and precision for longer-range shooting

Objective Lens

The riflescope is equipped with a 44mm objective lens diameter, a specification that directly influences the light-gathering capability and optical performance of the scope. This objective lens size contributes to:

• Moderate light transmission and brightness
• Balanced optical performance across varying lighting conditions
• Practical sizing for hunters in diverse environments

Field of View

At 100 metres, the Thrive 3-12x44mm provides a field of view specification of:

• Low magnification: 12.9 meters
• High magnification: 4 meters

These measurements indicate the visible area through the scope at 100-meter distance, enabling shooters to assess their viewing capability at different magnification settings.

Optical Design and Focal Plane Configuration

Second Focal Plane (SFP) Design

The riflescope utilizes a Second Focal Plane configuration, where the reticle is positioned in the second focal plane of the optical system. In this design:

• The reticle size remains constant regardless of magnification adjustments
• The reticle subtensions vary with magnification changes
• The reticle is calibrated at a specific magnification level for accurate holdover calculations

Reticle System

PHR 3 Reticle

The scope features the proprietary PHR 3 reticle, a ZeroTech-designed optical component created for specific hunting applications. This reticle assists shooters with:

• Aiming and targeting procedures
• Range estimation at different magnification levels
• Precise shot placement in hunting scenarios

The reticle manual is provided with the riflescope to explain the PHR 3 reticle specifications and proper usage techniques.

Mechanical Construction and Adjustments

Tube Construction

The riflescope features a 30mm main tube diameter, which is standard for mid-range hunting optics. This construction size:

• Provides enhanced light transmission compared to smaller 1-inch tubes
• Offers greater adjustment range capability
• Supports the installation of various mounting systems

Elevation and Windage Adjustment

The scope incorporates capped turrets with 0.25 MOA (minute of angle) adjustments, enabling precise vertical and horizontal corrections:

• Elevation adjustment: Allows vertical correction of bullet impact
• Windage adjustment: Permits horizontal correction for wind drift
• 60 MOA internal adjustment range: Provides substantial vertical aiming capability for different shooting distances
• Capped design: Protects the adjustment mechanisms while maintaining full functionality

Optical Coatings and Light Transmission

The riflescope is equipped with fully multi-coated lenses that provide:

• Consistent optical performance across varying lighting conditions
• Enhanced clarity and light transmission
• Strong brightness regardless of environmental factors
• Superior image quality in low-light shooting scenarios

Weatherproofing and Durability

Weathershield Lens Coating

The scope features Weathershield lens coating for environmental protection, protecting against:

• Moisture and humidity
• Dust and debris
• Environmental degradation
• Fogging in varying temperature conditions

This protective coating ensures the riflescope maintains optical integrity and functionality in challenging field conditions.

Exit Pupil Specifications

The Thrive 3-12x44mm riflescope has the following exit pupil diameter characteristics:

• Low magnification: 14.4mm
• High magnification: 3.7mm

These measurements indicate the diameter of the light beam exiting the scope's eyepiece, affecting brightness and eye relief comfort at different magnification levels.

Eye Relief

The riflescope provides eye relief ranging from 85-91mm, offering comfortable viewing distance between the shooter's eye and the ocular lens. This specification ensures safe operation and comfortable extended shooting sessions.

Weight and Dimensions

The Thrive riflescope weighs approximately 540-607 grams, making it a relatively lightweight option suitable for hunters who prioritize portability without sacrificing optical quality.

Included Accessories and Documentation

Box Contents

When purchasing the 3-12x44mm Thrive PHR 3 Riflescope, the package includes:

• Instruction Manual: Comprehensive operational and technical guidance
• Product Manual: Detailed specifications and maintenance information
• Reticle Range Chart: Distance-based hold points and range estimation reference
• High-Quality Microfibre Cloth: For cleaning and maintaining the lens surfaces

Application and Target Market

The ZeroTech Thrive 3-12x44mm PHR 3 Riflescope is designed for:

• Entry-level to mid-range hunters: Seeking dependable accuracy at a practical price point
• General hunting applications: Suitable for moderate to extended-range hunting scenarios
• Varied hunting conditions: Effective across diverse environmental and weather conditions

Manufacturing and Support

The riflescope is manufactured by ZeroTech Optics, an Australian precision optics company founded in 2018 with over 50 years of combined expertise in the optics industry. The company is known for:

• Dependable mechanical construction
• Clear glass optics
• Repeatable tracking
• Responsive customer support

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References

• [1] ZeroTech Optics Business Profile and Homepage