Vortex Razor HD 1-4x24 Riflescope EBR-556 MOA Reticle
At Vortex Optics, the need for high-performance, precision optics is the driving force behind all that we do. That’s why we carefully built the Razor HD riflescope to provide shooters with the ultimate short and medium range tactical riflescope. Specifically designed for the 55 gr. 5.56 mm round (also .
The Vortex Razor HD 1–4x24 Riflescope Elevation Adjustment Knob Windage Adjustment Knob MagView Fast Focus Eyepiece Objective Lens Battery Cover Illumination Knob Magnification Adjustment Ring Reticle Focus Elevation Knob (3) Turret Cap Retaining Screws Radius Bar Zero Reference Line Dual Use: Shooting Tactical / Hunting 2 4
Razor 1–4x24 Riflescope Specifications Waterproof Fogproof Length Mounting Length Weight Eye Relief Field of View Reticle Style Windage Elevation Turret Adjustment Recoil Tested Battery Yes Argon gas purging 10.3 inches (269.2mm) 6.5 inches (165.1mm) 20.2 ounces (572.66g) 3.9 inches (99.6 mm) 94.5–24.2 feet/100 yards (18–4.6°) EBR-556 200 MOA Total Travel 200 MOA Total Travel 24 MOA Per Rotation 1/4 MOA Per Click Rated for 50 BMG CR2032 Dimensions 3.0” (53.3mm) 2.0” (78.
Riflescope Adjustments Reticle Focus Adjustment The Vortex Razor HD 1–4x24 riflescopes use a fast focus eyepiece, designed to quickly and easily adjust the focus on the riflescopes reticle. To adjust the reticle focus, look through the riflescope at a blank white wall or up at the sky. Turn the eyepiece focus knob in or out until the reticle image is as crisp as possible. Try to do this quickly, as your eye will try to compensate for an out of focus reticle.
Windage and Elevation Adjustments The Vortex Razor HD 1–4x24 riflescope incorporates precision finger adjustable elevation and windage dials with Elevation audible clicks. To make adjustments: Adjustment Knob • Turn the adjustment dial in the appropriate direction Up/Down or Left/Right indicated by the arrows. • Move the dials in the direction you wish the bullets point of impact to change.
Radius Bar The Vortex Razor HD riflescopes incorporate the patented Radius Bar to visually assist in keeping track of the correct turret knob position at the rifle’s zero. By watching the position of the bar during field use, the shooter can quickly verify the correct turret knob position. In a CQB type of situation, the shooter can also use the Radius Bar as a quick visual aiming reference.
Illumination Adjustment The Vortex Razor 1–4x24 riflescopes use a variable intensity reticle illumination system to aid in low light performance. Illumination intensity levels will vary from bright to ultra low intensity compatible with night vision devices at the lowest setting. The illumination knob allows for 11 levels of brightness intensity; an off click between each level allows the shooter to turn the illumination off and return to a favored intensity level with just one click.
Riflescope Mounting To get the best performance from your Vortex Razor riflescope, proper mounting is essential. Although not difficult, the correct steps must be followed. If you are unsure of your abilities, it would be best to use the services of a qualified gunsmith. Centering of the Reticle The Vortex Razor HD riflescope is pre-set from the factory with the reticle in the center of the adjustment ranges.
Rings and Bases Following the manufacturers instructions, mount a high quality base and rings to your firearm. The Vortex Razor 1–4x24 riflescopes require 30mm rings. Vortex Optics recommends using premium quality rings mounting to a one-piece Picatinny base. Ring height for Vortex Razor HD 1–4x24 riflescopes will depend on the firearm and mount being used. Consult the ring and base manufacturer for suggested heights.
Eye Relief and Reticle Alignment Before the final tightening of the scope ring screws, adjust for maximum eye relief to avoid injury from recoil. To make the adjustment: 1. Set the riflescope to the middle of its magnification range. 2. Slide the riflescope as far forward as possible in the rings. 3. While viewing through the riflescope in a normal shooting position, slowly slide the riflescope back towards the shooter’s face—paying attention to the field of view. Just as the full view is visible, stop.
Sighting in the Rifle Bore Sighting Initial bore sighting of the riflescope will save time and money at the range. This can be done using a mechanical or laser bore sighter according to the manufacturer’s instructions. On some rifles, bore sighting can be accomplished by removing the bolt and visually sighting through the barrel. To visually bore sight a rifle: 1. Place the rifle solidly on a rest and remove the bolt. 2. Sight through the bore at a target approximately 100 yards away. 3.
Range Sight-In After the riflescope has been bore-sighted, final sight-in should be done at the range using the exact ammunition you expect to hunt or shoot with. The Razor 1–4x24 EBR-556 scope is specifically calibrated for the popular 5.56x45mm cartridge using 55 gr. bullets and a 100 yard zero range. The Razor 1–4 can be used with other cartridges, but be aware that the bullet drop references used on the EBR-556 reticle may not accurately match.
After the rifle has been zeroed at 100 yards, the elevation and windage knobs should be re-indexed to their zero indicators. This is a useful feature which allows you to quickly and accurately keep track of elevation or windage corrections dialed on the turrets in the field and quickly return to an original zero point setting. After completing the final sight-in: • Loosen the three elevation turret cap retaining screws using the 2.
Shooting the EBR-556 Reticle The Vortex Razor 1-4x24 EBR556 riflescope is equipped with the patented Vortex EBR-556 MOA glass etched reticle. Although this precision reticle has been specifically designed around the 5.56x45 (.223 Remington) cartridge using a 55 gr. FMJBT bullet, it can also be used with similar cartridges. Be aware that the further other cartridges vary ballistically from the 5.56 round, the further off the bullet drop and windage reference lines will be.
For distances inside of 50 yards For CQB type applications, use the EBR-556 reticle at 1x magnification with a high intensity illumination level. Shoot with both eyes open for maximum speed in target acquisition. Your eye should view the reticle as simply a large illuminated central dot. EBR-556 at 1x Note: Heavy non-illuminated lines extend vertically and horizontally in the field of view to ensure that the shooter still has a rapid aiming point of reference in case of battery failure.
For distances inside of 50–175 yards More magnification may be used if desired and main crosshairs should be used in a dead-on hold. Actual pointof-impact will typically be .2 inches below the crosshair intersection at 50 yards, dead on at 100 yards and 2.4 inches below crosshair intersection by EBR-556 at 4x 175 yards. For distances 200 yards and beyond For distance shooting applications, use the EBR-556 reticle at higher magnifications.
Note: If you are using the EBR-556 for precision shooting at small targets, be aware that there is not a 200-yard drop line. When shooting at 200 yards using center crosshair, the bullet will drop approximately three inches when the rifle is zeroed at 100 yards. The five horizontal lines below the central crosshair provide holdover references at 300, 400, 500, 600 and 700 yards.
Using the EBR-556 with Other Calibers and Loads Although the Razor 1-4 EBR556 uses a reticle calibrated specifically for the 55gr. 5.56mm round, it can still be easily used with many other popular calibers and loads. MOA drop numbers used on the reticle are listed below. Generating a custom ballistic drop chart for other calibers and loads being used will allow the MOA drops to be compared for compatibility. EBR556 Reticle 200 Yards – No drop number supplied 300 Yards – 4.4 MOA 400 Yards – 8.
Custom Drop Chart for Sierra .308 165 gr. Range Drop (Yards) (MOA) 0 — 25 -2.5 50 -0.2 75 0.2 100 -0.0 125 -0.4 150 -0.9 175 -1.4 200 -2.0 225 -2.7 250 -3.4 275 -4.2 300 -5.0 325 -5.8 350 -6.7 375 -7.6 400 -8.5 425 -9.5 450 -10.5 475 -11.6 500 -12.7 525 -13.9 550 -15.1 575 -16.3 600 -17.7 625 -19.0 650 -20.5 675 -22.0 700 -23.
Ranging Distances with the EBR-556 Reticle There are several unique man-sized ranging features used in the EBR-556 reticle. By matching a man’s shoulder width (or any other object spanning 19 inches) to the most closely matched reticle image, approximate range can be determined. The following estimations are based on an average 19-inch shoulder width. These range estimations will also work with any other object spanning 19 inches.
300 Yards 300-yard drop reference line width (5.7 MOA) approximately corresponds to 19 inches (a man’s shoulder width) at 300 yards. 400 Yards 400-yard drop reference line width (4.7 MOA) approximately corresponds to 19 inches (a man’s shoulder width) at 400 yards. 500–700 Yards The fine inner line section approximately corresponds to 19 inches (a mans shoulder width) at these yardages: 500 (3.8 MOA), 600 (3.1MOA), 700 (2.7 MOA). 500-yard example shown.
Estimating 10 MPH Wind Drift with the EBR-556 Reticle The EBR-556 reticle also helps estimate wind drift using the following references: 100 to 200 Yards Due to minimal 10 mph wind drift, no reference is provided. 300 Yards Flat sides of the inner ring. (2.9 MOA) 10 MPH Wind Drift 400 Yards Corners between the flat bottom of the circle and the outer circle diameter.
500 Yards Outer edge of the thick horizontal line section. (8 MOA) 10 MPH Wind Drift 600 Yards Outer edge of the thick horizontal line section. (10.4 MOA) 10 MPH Wind Drift 700 Yards Outer edge of the thick horizontal line section. (12.
Maintenance Cleaning The Vortex Razor riflescope requires very little routine maintenance other than periodically cleaning the exterior lenses. The exterior of the scope may be cleaned by wiping with a soft, dry cloth. When cleaning the lenses, be sure to use products that are specifically designed for use on coated optical lenses. • Be sure to blow away any dust or grit on the lenses prior to wiping the surfaces.
Troubleshooting Sighting-in Problems Many times, problems thought to be with the scope are actually mount problems. Be sure the mounts are tight to the rifle and the scope is secured so it doesn’t twist or move in the rings. An insufficient windage or elevation adjustment range may indicate problems with the base mount, base mount holes drilled in the rifle’s receiver, or barrel/receiver alignment. Check for Correct Base and Ring Alignment 1. Re-center the scope reticle (see Centering of the Reticle). 2.
Vortex Service and Repair Policy Unconditional Lifetime Warranty Vortex Optics wants you to shoot and use your Razor HD riflescope under any conditions with complete confidence—that’s why our warranty is straightforward and simple: • Fully transferable Unconditional Lifetime Warranty • No warranty card needed • No receipt needed Rest assured, if this riflescope should ever require repair, all you need to do is contact Vortex for absolutely free service. Call 800-426-0048 or e-mail service@vortexoptics.
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