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Vortex EBR-2B MOA ReticleThe Vortex ® Razor ® HD 5–20x50 riflescope is equippedwith the Vortex EBR-2B MOA reticle.Designed to maximizelong distance shooting andranging abilities, the EBR-2BMOA reticle can be used toeffectively determine ranges,holdovers, and windage andmoving lead corrections.Ultra precision laser etchingon the glass reticle ensures that MOA specifications canbe kept to the tightest tolerances possible. The fine centercrosshair subtensions on the EBR-2B MOA reticle werecarefully chosen to provide the optimum balance betweenprecision aiming and low light visibility.US Patents 7,958,665Dual Use: Shooting Tactical / Hunting11

MOA SubtensionsThe EBR-2B reticle is based on minute-of-angle (MOA)subtensions. MOA measurementsare based on degrees andminutes: 360 degrees in acircle, 60 minutes in a degreefor a total of 21,600 minutes.These angular measurementsare used to estimate range andcorrect for bullet trajectorydrop in riflescopes. 1 MOA willcorrespond to 1.05 inches at a 100yard distance, 2.1 inches at 200yards, 3.15 inches at 300 yards,and so on.When used in a first focal planeriflescope, such as the VortexRazor HD riflescopes, the MOAsubtensions of the EBR-2B reticleEstimating MOAAlthough 1 MOA is verycommonly correspondedto 1 inch at 100 yards,this is not quite correct1 MOA at 100 yardsequals 1.05 inches.Calling 1 MOA an inchper 100 yards may beacceptable at shorterdistances, but it willcause a fi ve percent errorin ranging and holdoveradjustments. This willresult in missed shots atlonger distances.are valid at all magnification levels. This means the shootercan use the magnification level most appropriate for thesituation and still have effective holdover and windagereference marks.This feature is extremely valuable in a high-stress situationbecause the shooter does not have to remember to set the scopeto one particular magnification to get valid holdovers—an actionnecessary in the more common second focal plane reticles.Heavy crosshairssubtend 3 MOAFine crosshairssubtend .15 MOALarge dotssubtend .3 MOASmall dotssubtend .2 MOACenter gap subtends.25 MOAEBR-2B MOA Reticle SubtensionsHashmarks subtend1 MOA22 3

RangingExampleMOA measurements are very effective for ranging using asimple formula. To use this formula, the shooter needs toknow the size of the target or nearby object in inches.MOA Ranging FormulaTarget Size (Inches) x 95.5Measured MOAs=Range (Yards)Using either the vertical or horizontal MOA scale, place thereticle on a target of known dimensions and read the numberof MOAs spanned. You will obtain maximum accuracy inranging by calculating exact MOA measurements. MOAsshould be estimated in 1/4s if possible.Accurate measuring will depend on a very steady hold. Therifle should be solidly braced using a rest, bipod or slingwhen measuring. Once you have an accurate MOA reading,use the formula to calculate the distance.Ranging a 6-foot target stand (72 inches)at 12 MOAs yields 573 yards.72 x 95.512 MOA= 573 YardsNote: In the MOA ranging formula, a shooter may substitute 100 for 95.5in the interest of speedier calculations. Be aware that this will produce a fi vepercent over-estimation error of the yardage distance obtained.34 5

Elevation HoldoversExampleOnce the distance has been calculated using the EBR-2Breticle or a laser rangefinder, the EBR-2B can be used forrapid holdover correction for bullet drop of the cartridgebeing used. To get the most benefit out of the EBR-2Bequipped riflescope, Vortex Optics highly recommendsshooters learn their bullet drop numbers in MOAs ratherthan inches.Since the EBR-2B reticle is scaled in 1 MOA increments,it is an easy job to quickly select the correct dropreference line once the shooter knows the bullet drops inMOAs. If the shooter prefers to dial come ups for bulletdrop using the elevation knob, knowing bullet dropsin MOAs rather than inches will allow for much fasteradjustments as the MOAs can be quickly read on theelevation knob.17.5 MOA reticle holdover for 625 yard shot. No wind.46 7

Windage and Moving TargetsThe EBR-2B reticle is highly effective when used for windand moving target leads. Using the reticle for effectivewindage and moving target leads will require thoroughknowledge of your weapons system’s ballistic performanceunder varying conditions and experience in readingwind strengths and target speeds. As in bullet drops, it isimportant for the shooter to learn a particular weapon’swindage/moving target corrections in MOAs rather thaninches. Always hold the reticle into the wind.Example15 mph windFull value wind at 90 degreesBasic windage correction on center crosshairWhen dialing elevation come ups, the center horizontalcrosshair will be used for windage or moving leadcorrections. MOA marks on the horizontal crosshair aregraduated in 1 MOA increments.3 MOA reticle windage correction for 400 yard shot in 10 mph crosswindusing center crosshair. Elevation adjustment already dialed into rifl escope.58 9

Basic windage correction using drop line on reticleWhen using the reticle for elevation correction rather thandialing, the windage dots will be used for windage andmoving lead corrections. The windage dots are graduatedin 1 MOA increments and provide increasingly greaterspan in the lower part of reticle, corresponding to the needfor greater windage correction at longer distances. Thesupplied windage dots will at least accommodate a 20 mphcrosswind for most popular high-powered applications.Remember to hold the reticle into the wind.Example20 mph windFull value wind at 90 degrees8 MOA reticle windage correction for 500 yard shot in 20 mph crosswindusing 12 MOA reticle drop line.610 11

Basic moving lead correctionExampleWhen estimating moving target leads, the MOA markson the center horizontal crosshair can be used. Estimatingmoving target leads will require knowing yardage distance,wind speed, moving target speed, and total bullet flight time(including rifle lock time). Bullet flight times can be roughlycalculated based on fps velocities or a ballistic calculator.Note: Correctly estimating moving leads is very difficult andrequires considerable practice and knowledge beyond the scopeof this manual.Moving Direction9.4 MOA reticle correction for a target moving 3 mph at a distance of 800yards. No wind. Total bullet time of fl ight from trigger pull 1.5 secondsduring which the target travels 6.6 feet. Elevation already dialed into turret.712 13

Vortex Service and Repair PolicyWe build optics based on our commitment to your absolute satisfaction.That’s why Vortex products are unconditionally guaranteed and wemake this Very Important Promise to you—a Very Important Person.vortexoptics.comRest assured that in the event yourRazor HD riflescope becomesdamaged or defective, VortexOptics will repair or replace theriflescope at no charge to you. CallVortex Optics at 800-426-0048 ore-mail service@vortexoptics.com forprompt, professional, and friendlyservice.Unconditional Lifetime WarrantyVortex Optics2120 West Greenview DriveMiddleton, Wisconsin 53562 USAVisit www.vortexoptics.com for more information. Canadian customersmay visit www.vortexcanada.net for customer service information.Note: The VIP warranty does not cover theft, loss, or deliberatedamage to the product.RZR-R52005-12A© Vortex Optics USA14