Description
Unlock the full potential of your outdoor adventures with the Leupold BX-4 Pro Guide HD 8x42mm Binoculars (model 172662). These premier optics are tailored for the avid rifle scope shopper, offering unparalleled clarity and performance during those early dawn or late dusk hours when game is most active.
Featuring the revolutionary Twilight Max Light Management System, these binoculars ensure maximum brightness and definition for a superior viewing experience. An open bridge design coupled with a durable, yet lightweight, aluminum body makes for comfortable all-day usage. With their waterproof construction and Leupold's Full Lifetime Guarantee, the BX-4 Pro Guide HD binoculars promise reliability in the most challenging environments.
Experience a grip that's secure in any condition, thanks to the redesigned body armor. This textured surface provides excellent handling, with or without gloves. As a tool indispensable for hunters and outdoor enthusiasts, these binoculars deliver crisp, clear images with minimal edge distortion, thanks to the high-definition, calcium-fluoride lenses and phase-coated BAK 4 prisms. Opt for the BX-4 Pro Guide HD binoculars to elevate your field viewing to HD clarity.
Features
- ADVANCED OPTICS: BAK 4 Prisms deliver a round exit pupil and minimal edge distortion for clear viewing.
- TWILIGHT MAX SYSTEM: Twilight Max Light Management System allows for prolonged glassing during low light conditions.
- DURABLE AND LIGHT: Encased in aircraft aluminum for optimal durability and less user fatigue.
- CRISP IMAGE QUALITY: Fully multi-coated lenses ensure superior brightness and true color across the spectrum.
- HIGH DEFINITION: Razor-sharp, high-definition viewing at all magnifications with the specialized lenses.
- COMFORTABLE HANDLING: Ergonomic open bridge design and textured body armor for non-slip grip.
- WATERPROOF RELIABILITY: Completely waterproof integrity for consistent performance in all conditions.
- LEUPOLD GUARANTEE: Backed by Leupold's Full Lifetime Guarantee for peace of mind.
Specifications
| Feature | Specification |
|---|---|
| Item Condition | New |
| Binocular Weight | 23.4 oz. |
| Binocular Magnification | 8x |
| Objective Lens Diameter | 42mm |
| Binocular Eye Relief | 0.74 inches |
| Exit Pupil | 5.3 mm |
| Field of View | 368 feet @ 1000 yards |
| Dimensions | Length 5.6 inches |
| Angular Field of View | 7 Degrees |
| Finish | Shadow Gray |
| Package Includes | Shoulder strap, binocular case, lens covers, lens cloth |
| Close Focus Range | 8 ft |
| Interpupillary Distance | 58 - 74 mm |
| UPC | 030317015091 |
| MPN | 172662 |
Included In The Box
- Leupold BX-4 Pro Guide HD 8x42mm Binoculars
- Premium Binocular Case
- Comfortable Shoulder Strap
- Protective Lens Covers
- Soft Lens Cloth
The Leupold BX-4 Pro Guide HD 8x42mm Binoculars are ready to reveal the most subtle details of wildlife and landscapes, making every moment in the outdoors count, from dawn to dusk.
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Optics Knowledge Center
Understanding Rifle Scope Basics
Magnification
Magnification refers to how much larger an object appears through the scope compared to the naked eye. Fixed power scopes have one magnification setting, while variable power scopes offer a range (e.g., 3-9x).
Objective Lens
The objective lens is the front lens that gathers light. Larger objective lenses (measured in mm) gather more light, providing brighter images in low-light conditions but add weight and require higher mounting.
Reticle
The reticle (crosshair) is the aiming point inside the scope. Modern scopes offer various reticle designs, from simple duplex crosshairs to complex ballistic reticles with holdover points for different distances.
Adjustments
Rifle scopes have turrets for windage (horizontal) and elevation (vertical) adjustments. These are measured in MOA (minutes of angle) or MRAD (milliradians) and allow precise aiming adjustments.
Proper Scope Mounting Guide
Select the Right Rings & Base
Choose rings that match your scope's tube diameter (typically 1", 30mm, or 34mm). Select a base compatible with your rifle's receiver. For heavy-recoiling rifles, opt for stronger mounts.
Install the Base
Clean the receiver and base thoroughly. Apply a small amount of blue Loctite to the screws. Attach the base to the receiver and torque the screws to manufacturer specifications.
Attach the Rings
Attach the bottom halves of the rings to the base. Place the scope in the rings and loosely attach the top halves. Don't fully tighten yet.
Set Eye Relief & Level
Position the scope for proper eye relief (3-4 inches) in your normal shooting position. Ensure the reticle is level using a scope leveling tool. Once positioned correctly, tighten the rings evenly in a cross-pattern.
Scope Zeroing Tips
Start Close
Begin zeroing at a shorter distance (25-50 yards) to ensure you're on paper before moving to your desired zero distance (typically 100 yards).
Use a Stable Rest
Always zero your rifle from a stable shooting position using a bench rest, sandbags, or a shooting rest to eliminate as much human error as possible.
Fire Groups
Fire 3-shot groups before making adjustments. This provides a more accurate representation of where your rifle is shooting than single shots.
Make Deliberate Adjustments
Know your scope's adjustment values (typically 1/4 MOA per click). If your group is 2 inches low at 100 yards, you'll need to adjust up 8 clicks (for a 1/4 MOA scope).
Confirm Your Zero
After making adjustments, fire another group to confirm your zero. Repeat the process until your point of impact matches your point of aim.
Document Your Settings
Once zeroed, record your settings including distance, ammunition used, and environmental conditions for future reference.
Optics Maintenance & Care
Cleaning Lenses
- Start by blowing or brushing away loose particles
- Use a lens pen or microfiber cloth for fingerprints
- For stubborn dirt, use lens cleaning solution (never household cleaners)
- Clean with gentle circular motions from center outward
Protecting Your Optics
- Always use lens caps when not in use
- Store in a dry place with silica gel packets
- Avoid extreme temperature changes
- Use a quality scope cover in harsh conditions
Regular Maintenance
- Check and tighten mount screws periodically
- Inspect O-rings and seals for damage
- Verify zero after rough handling
- Clean the exterior with a damp cloth
What to Avoid
- Never use fingers to touch lenses
- Avoid paper products (tissues, paper towels) on lenses
- Don't use acetone, alcohol, or household cleaners
- Never disassemble your scope (voids warranty)