Description
Built to take on the harshest conditions this spotter is a must have for any serious hunter or shooter. It features an incredibly rugged magnesium body that is 100 percent waterproof and fogproof an oversized eyepiece that provides all-day comfort and Leupold’s Twilight Max HD Light Management System which helps you see more in less light while reducing glare in direct light. And like all Leupold spotting scopes the SX-4 Pro Guide HD is guaranteed to perform for life or we’ll repair or replace it for free.
Features:
- Guard-Ion Lens Coating- Sheds dirt and water for clear crisp images with the Guard-ion lens coating
- Smooth Focusing-Features an extremely smooth focusing system for fine adjustments.
- Tripod Ready-A built-in 1/4-20 rotateable tripod adapter port makes it easy to mount to a tripod.
- Twilight Max HD Light Management System-See more in less light with Twilight Max HD Light
- Management System
- Adds up to 30 extra minutes of shooting light
- Eliminates 90% more glare-producing stray light than competitors
- Premium high definition edge-to-edge lens clarity
- Twist Up Eyecups-Features twist-up eyecups and generous eye relief for comfortable extended viewing.
- Waterproof & Fogproof-Absolute waterproof and fogproof integrity means it's ready to perform in the field in all conditions.
- Guaranteed For Life-Guaranteed to perfom for life backed by a lifetime warranty
- Integrated Sunshade-Instant glare reduction with an easy-to-deploy integrated sunshade
- Over-sized Eyepiece-All-day glassing comfort with increased contact area and a flexible ergonomic design
- Scratch Resistant Lenses-Extreme Military-Standard scratch resistance for added protection
Specifications:
- Angular FOV Range: 2.5-1.3
- Actual Magnification Range: 15-45
- Eye Relief Range: 20.0-17.6
- Linear FOV (ft/1000 yd) - Low: 131
- Weight (oz): 62
- Linear FOV (ft/1000 yd) - High: 68.1
- Length (in): 14.7
- Eye Relief (mm) - Low: 20.00
- Eye Relief (mm) - High: 17.6
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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)