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	<title>Christopher Rance &#8211; Small Arms Defense Journal</title>
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		<title>Weapon Employment Zone</title>
		<link>https://sadefensejournal.com/weapon-employment-zone/</link>
		
		<dc:creator><![CDATA[Christopher Rance]]></dc:creator>
		<pubDate>Fri, 13 Feb 2015 08:15:52 +0000</pubDate>
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					<description><![CDATA[ABOVE: Sniper team from CCG 4-3 INF Reg using an Applied Ballistics Kestrel at the Army Mountain Warfare School in Jericho VT. “The point is not to have the highest on-base percentage, but to win games as cheaply as possible. And the way to win games cheaply is to buy the qualities in a baseball [&#8230;]]]></description>
										<content:encoded><![CDATA[<p><I>ABOVE: Sniper team from CCG 4-3 INF Reg using an Applied Ballistics Kestrel at the Army Mountain Warfare School in Jericho VT.</p>
<p>“The point is not to have the highest on-base percentage, but to win games as cheaply as possible.  And the way to win games cheaply is to buy the qualities in a baseball player that the market undervalues, and sell the ones that the market overvalues.”  &#8211; Michael Lewis</I></p>
<p>In <I>Moneyball, The Art of Winning an Unfair Game</I> by Michael Lewis the story is about the Oakland Athletics baseball team and its general manager Billy Beane.  Its focus is the team’s analytical, evidence based, sabermetric approach to assembling a competitive baseball team, despite Oakland’s disadvantaged revenue situation when compared to a team like the New York Yankees.</p>
<p>For 12 years the military has had New York Yankee levels of money.  “The nation has paid for everything we have asked for since 9/11.  It has made us intellectually lazy.” (Retired Lieutenant General Paul Van Riper.)  “When the money gets short, it’s time to think.”<br />
Snipers are a remarkable breed.  Given the multitude of factors that can cause a bullet to miss its intended target, it is a wonder that snipers are consistently able to hit anything, especially at extended ranges.  Humans are of course, the ultimate fire control system.  Science will never supplant a trained sniper.  Technology can only augment the skills that snipers already possess.  However, with bravado set aside, snipers tend to only remember that one remarkable shot in combat at 800 meters.  The sniper tends to overlook the number of rounds expended in training and combat and they attribute any “flyer” in a group to fate.  Military strategists need to strive to provide snipers with the best tools available so that they can do their job but as cheaply as possible. </p>
<div class="img " style="width:100%px;">
	<a><img decoding="async"  alt="" width="100%" data-src="http://sadefensejournal.com/wp-content/uploads/2014/12/wez01.jpg" class="lazy" src="data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%200%200'%3E%3C/svg%3E" /></a>
	<div>Wilcox RAPTAR M with built in Applied Ballistics software.</div>
</div>
<p>
<B>Weapon Employment Zone<br />
(WEZ) Analysis</B></p>
<p>Bryan Litz, renowned competitive shooter and ballistician, has created an analysis method called The Weapon Employment Zone, or WEZ for short.  The WEZ analysis is model based, statistic in nature, and quantifies the hit percentage of a given shooting system on specified targets as a function of range.  This analysis is carried out using defined uncertainties related to practical field shooting.  With this capability, you can calculate your probability of hit for specific weapon systems in different levels of environmental uncertainty.  The value of quantifying the hit percentage of a given sniper/rifle/ammunition combination is that the information can be used to quantify sniper effectiveness in war gaming scenarios.  In short, the WEZ aims to increase the first round hit probability of the sniper team, thus reducing target engagement time by reducing the number of rounds spent to score the first hit.  If a sniper hits the target 99 percent of the time, then you can feel pretty safe predicting that he’s going to hit it the next time he shoots.  So knowing the sniper’s rate of success tells you that he’ll almost certainly accomplish the mission.  In summary, the WEZ can be used to assist the decision makers on how to decide on where to focus training resources, budgets, etc.  (Accuracy and Precision For Long Range Shooting &#8211; Bryan Litz).  The Applied Ballistics Analytics package retails for $200 USD.  The cost of the standard sniper round M118LR (AA11) is $1.25 USD.  Fiscal Year 13 ammunition cost expense at the United States Army Sniper School $489,739. Could the WEZ cut those costs in half?  Can it lead to better planning on how to effectively train a new sniper? </p>
<p>Not surprisingly, the WEZ analysis shows range and crosswind to be the two variables that lead to the greatest error in a miss.  Range uncertainty is almost a given when in an unknown environment.  The sniper has to rely on various methods of range estimation to assign the correct range to the target.  The most common range estimation method used by snipers is to use the reticle inside their scope to measure a target using a reticle graduated in Mil dots.  A simple formula is applied that uses the actual target size in inches, and the size of the target in the scope’s reticle to formulate a range to the target.  This method is effective, but is subject to uncertainties.  With recent advancement in technology, the sniper now has access to more sophisticated tools to measure range.  The newest device to hit the market is the Wilcox RAPTAR-M with built in Applied Ballistics software.  The RAPTAR is a very unique device that incorporates both visible and IR aiming lasers, an IR illuminator and a laser range finder that displays the range to the target via screen.  The RAPTAR-M model with the built in Applied Ballistics software includes its own ballistic computer with back-lit LCD screen and weather chip to monitor atmospheric conditions.  The RAPTAR-M’s rear display also provides the sniper with a virtual cant device, elevation information specific to your rifle load and the ability to manually input windage.  The RAPTAR-M also has the ability to communicate with other Bluetooth devices via other Applied Ballistics devices such as the AB Kestrel.  This type of synchronization can provide live wind data for a complete firing solution. </p>
<div class="img " style="width:100%px;">
	<a><img decoding="async"  alt="" width="100%" data-src="http://sadefensejournal.com/wp-content/uploads/2014/12/wez02.jpg" class="lazy" src="data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%200%200'%3E%3C/svg%3E" /></a>
	<div>DRS Ventus RT kit.</div>
</div>
<p>
<B>Wind, Our Greatest Enemy</B></p>
<p>Wind will always be the snipers worst enemy.  Instrumentation can help the sniper hone one’s ability to “read” the wind.  A Kestrel wind meter is a staple piece of equipment in a snipers toolbox.  The sniper can use the Kestrel at anytime and practice guessing the wind speed that you feel or see in the indicators then apply that to what they might see downrange in similar indicators such as vegetation.  Another excellent training tool for wind is the Ventus System from DownRange Systems.  This system allows the sniper to know what the winds are doing down range, where it has the most effect on the path of the bullet.  There can be several different wind conditions present at any given time on a typical shooting range.  Shifting winds, lay of the land, trees, and other obstacles make accurate wind calls difficult.  By using the Ventus with a Kestrel 4500 wind meter, the sniper can obtain accurate wind velocity and direction from up to 1 mile away from his location.  It is an invaluable tool for learning/teaching the fine art of calling wind.  DownRange System’s Ventus Kit allows the user to place a Kestrel weather station down range at long distances and receive accurate and fast transmission of data.</p>
<div class="img " style="width:100%px;">
	<a><img decoding="async"  alt="" width="100%" data-src="http://sadefensejournal.com/wp-content/uploads/2014/12/wez03.jpg" class="lazy" src="data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%200%200'%3E%3C/svg%3E" /></a>
	<div>United States Army Sniper School ammunition expense FY13.</div>
</div>
<p>
<B>Ventus –RT Kit Components</B><br />
<UL TYPE=disc><br />
<LI>Down Range Data Transmitter-1A (DT-1A)</LI><br />
<LI>Down Range Receiver-1A (DR-1A)</LI><br />
<LI>Mini tripod and weather vane</LI><br />
<LI>Charging system</LI><br />
<LI>Carrying case</LI><br />
<LI>Kestrel 4000 or 4500 (User Supplied)</LI><br />
<LI>Tripod for Transmitter (User Supplied)</LI></UL></p>
<p>The tools mentioned above would cost the military no more than what a used car would cost.  Despite what the Pentagon wants to believe, the next conflict isn’t going to be won by robots or drones, but by smart, adaptive men who look for ways to innovate ones set of skills to build the perfect sniping team.</p>
<div class="img " style="width:100%px;">
	<a><img decoding="async"  alt="" width="100%" data-src="http://sadefensejournal.com/wp-content/uploads/2014/12/wez04.jpg" class="lazy" src="data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%200%200'%3E%3C/svg%3E" /></a>
	<div>Wilcox RAPTAR M.</div>
</div>
<p>
<div class="img " style="width:100%px;">
	<a><img decoding="async"  alt="" width="100%" data-src="http://sadefensejournal.com/wp-content/uploads/2014/12/wez05.jpg" class="lazy" src="data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%200%200'%3E%3C/svg%3E" /></a>
	<div>Author using a Kestrel with Horus ballistic software.</div>
</div><br /><a><img decoding="async" align="right" data-src="http://sadefensejournal.com/wp-content/uploads/2014/04/article_end.png" class="lazy" src="data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%200%200'%3E%3C/svg%3E" /></a></p>
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		<item>
		<title>Gateway to the Battlefield: A Sniper and His Optic</title>
		<link>https://sadefensejournal.com/gateway-to-the-battlefield-a-sniper-and-his-optic/</link>
		
		<dc:creator><![CDATA[Christopher Rance]]></dc:creator>
		<pubDate>Thu, 17 Apr 2014 22:59:04 +0000</pubDate>
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		<guid isPermaLink="false">http://sadefensejournal.com/wp/?p=2595</guid>

					<description><![CDATA[A defining moment for a sniper is when he can positively identify a threat within his area of operation and exercise certain actions, from an intelligence report to target neutralization.  The ability to identify a target is vital in a stability operation or counterinsurgency (COIN) environment, where precisely aimed fire is at a premium and collateral damage isn’t an option....]]></description>
										<content:encoded><![CDATA[<p><em>ABOVE: Author conducting UKD engagement.  The weapon is a LaRue Tactical OBR 7.62mm.</em></p>
<p>A defining moment for a sniper is when he can positively identify a threat within his area of operation and exercise certain actions, from an intelligence report to target neutralization.  The ability to identify a target is vital in a stability operation or counterinsurgency (COIN) environment, where precisely aimed fire is at a premium and collateral damage isn’t an option.</p>
<p><b>The Basics: Calibrating </b><b>Your Rifle Zero</b><br />
Military sniping is an application that involves both precision and accuracy.  Precision is from the characteristics of the rifle and ammunition.  Precision is how well it prints group sizes, whereas accuracy is an indication of how a group of shots hit relative to the intended aim point, regardless of group size.  The requirement for great accuracy is having a reliable zero.  When you zero your weapon from different support positions, you can incur a different POI (point of impact).  For the traditional sniper role, this will be from the prone bipod position.  Realistically, the sniper will not always be able to shoot from the prone bipod position.  Positional shooting (kneeling, standing) and even off a tripod is highly likely.  A recommendation is to analyze POI shifts from those alternate support positions on a dot drill target at your zero range.  If you see that when you shoot off a tripod you generally shoot .2 MILS low, you can accommodate for that error and add .2 MILS to your firing solution.  Other POI shifts in your weapon’s zero can come from temperature effects and harmonics.  Annotate these changes and account for them.  Lastly, when zeroing, a three shot group isn’t recommended.  A five round shot group, shot five times will give a good representation of the rifle’s inherent precision.</p>
<p></p>
<div class="img " style="width:100%px;">
	<a><img decoding="async"  alt="" width="100%" data-src="http://sadefensejournal.com/wp-content/uploads/2014/04/sniper1.jpg" class="lazy" src="data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%200%200'%3E%3C/svg%3E" /></a>
	<div>RAPTAR LRF/IR/Vis aiming device. A must have to device to measure range to targets.</div>
</div>
<p>Un-calibrated sight adjustments are a common problem in long range shooting.  Many snipers take for granted that when they dial up or hold a certain correction in a reticle, that they’re getting exactly the intended correction.  In reality, it’s generally more often that there is some amount of error in a scope’s turret or reticle.  As with every other measurement instrument, the turrets and reticle need to be verified before they can be trusted.  The test to use to conduct the calibration is called “The Tall Target Test.”  The tall target test is conducted in the following manner; remember, the Tall Target Test is a calibration exercise, so it’s very important to know the exact zero range.  Verify with a LRF (laser range finder) or tape measure.</p>
<ol>
<li>Put up a tall target (36 inches tall) at your 100 (meter/yard) zero range.  Have an aim point at the bottom of the target and a plumb line (leveled line) drawn up from the center of the aim point.  You can use a carpenter’s level or a plumb bob to draw the vertical line.</li>
<li>Shoot the lower aim point to verify your zero.  Now dial your elevation turret up 30 MOA or 10 MILS.  Still shoot at the aim point when doing this.</li>
<li>After you have fired your groups, you can calculate the correction factor for that given scope.  Measure from the zero group to the actual group for your 30 MOA increment.</li>
</ol>
<p>Correction Factor: 1 MOA (minute of angle) equals 1.047 inches at 100 yards.  30 X 1.047 = 31.41 inches.  Let’s say your scope only moved 29.5 inches: it’s only moving 94% as far as it should when it’s adjusted – 6 % less than it should move.  Therefore, when you have to dial for elevation, you have to dial 106% of the intended adjustment.  For example: You have a target that requires 30 MOA of elevation, but by doing the tall target test, you know that you actually need to dial 30 X 1.06 = 31.8 MOA in order to get a true 30 MOA on the scope.</p>
<p></p>
<div class="img " style="width:100%px;">
	<a><img decoding="async"  alt="" width="100%" data-src="http://sadefensejournal.com/wp-content/uploads/2014/04/sniper2.jpg" class="lazy" src="data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%200%200'%3E%3C/svg%3E" /></a>
	<div>A sniper conducts Mountain operations at AMWS in Vermont. Sniper is using a Larue Tactical OBR outfitted with a Nightforce NXS riflescope.</div>
</div>
<p>The Tall Target Test is also a way to check if your scope is vertically tracking correctly.  You want to eliminate any cant.  Leveling your scope is very important and a necessity for long range shooting.  Shooting with a verified leveled rifle and scope will promote in better wind reading since it will allow you to observe wind effects directly without an unknown component of cant.  By shooting the Tall Target Test with your level installed, you will assure your wind zero is calibrated.  Every sniper should have a scope level installed in order to prevent the accuracy damaging effects of cant.</p>
<p><b>MOA Consistency Errors</b><br />
When it comes to a MOA standard across the industry, many manufactures fall short.  Many manufactures will advertise MOA adjustments but fail to specify if the turrets and/or reticle are SMOA (shooter minute of angle 1 MOA = 1 inch at 100 yards), IPHY (inches per hundred yards) or TMOA (true minute of angle = 1.047 inches at 100 yards).  This type of error equals a miss at 1,000 yards and can create a huge dilemma for a sniper team if one shooter is using X brand of scope and the other is using Y brand of scope.  You’re speaking two different languages.  One manufacture that gets this right is NightForce optics.  They offer clear and concise descriptions of their scope turrets and reticles in the user manual.</p>
<p></p>
<div class="img " style="width:100%px;">
	<a><img decoding="async"  alt="" width="100%" data-src="http://sadefensejournal.com/wp-content/uploads/2014/04/sniper3.jpg" class="lazy" src="data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%200%200'%3E%3C/svg%3E" /></a>
	<div>NightForce NXS compact 2.5-10x42mm riflescope.  This scope performs flawlessly in low light scenarios and is night vision compatible and has 3 illumination settings.  This is one of the only 10x scopes on the market to offer adjustable parallax.</div>
</div>
<p><b>Echelons of Capability</b><br />
The latest craze taking over the military sniper community is the use of MIL based grid system reticles.  Calibrated in USMC mils (6283 mils/circle) (1 mil = 3.60 inches at 100 yards) (10cm at 100 meters).  These reticles let you visually place the target on the appropriate horizontal and vertical grid lines to correct for elevation and windage visually without turning knobs or counting clicks.  These reticles are great for when you are in desert mountainous regions where you can generally see dust fly from misses, but once you move into an area of operation such as the Philippines, were foliage is dense, this type of reticle gets lost.  A finer reticle, such as NightForce’s MIL-R reticle or the Mil Dot reticle offered in their scopes is excellent in dense foliage areas.  It allows the sniper to stay focused on the center intersecting lines of the scope and offers an uncluttered FOV (field of view) of the target area.</p>
<p><b>Designated Marksman Solution</b><br />
Reticles such as the TReMoR2 and CMR-W reticles are an excellent DM (Designated Marksman) solution.  These types of reticles are a full minute of man tools, not long-range precision on partial obscured targets tools.  For a line dedicated marksman outfitted with a 16-inch .308, these reticles can give the DM speed and accuracy to 600m effectively and beyond potentially.  Generally, DMs are rightly being placed on support by fire lines in Afghanistan.  Effective support by fire is critical for the assault team’s success and safety.  DMs have the ability to engage point targets on the objective in close proximity to the assaulters.  Today’s battle rifles such as the FN SCAR17s and LaRue OBR 7.62, outfitted with a variable power, lightweight scope such as the NightForce NXS Compact 2.5-10&#215;42 in MIL/MIL configuration gives the DM an ideal platform to deliver 175 grains of diplomacy onto targets of opportunity.</p>
<p></p>
<div class="img " style="width:100%px;">
	<a><img decoding="async"  alt="" width="100%" data-src="http://sadefensejournal.com/wp-content/uploads/2014/04/sniper4.jpg" class="lazy" src="data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%200%200'%3E%3C/svg%3E" /></a>
	<div>Sniper team from CCG 4/3 IN TOG using a Nightforce NXS riflescope w/ Horus H59 reticle.</div>
</div>
<p><b>Magnification</b><br />
Magnification is a function of mission requirement, weight, cost and bulk.  Magnification is an enabler when it comes to acquiring positive identification on a HVT (High Value Target) or the presence of small arms.  A magnified scope will allow the sniper or DM to ID further and faster than shooters with minimal magnification like an ACOG or Short Dot.  9x or 10x magnification will get you to 1,000 yards, but magnification greater than 10x will give you precision aiming for smaller targets or partially exposed targets.  One thing you have to be cautious of in First Focal Plane (FFP) scopes, the stadia line thickness increases with magnification, which could hinder the sniper in refining his aim point.  Scopes with larger magnifications (3-20x and greater) tend to be heavier and bulkier then their lighter counterparts.  Weight is an important consideration when it comes to mission planning.  In the end, the Mission will drive the tools necessary to complete the mission.  Snipers need to continue to evolve and progress.  Don’t let the lessons we learned from over a decade of fighting go by the wayside with the drawdown.  Continue to reinvent the wheel and fine-tune the greatest all weather, day and night offensive and defensive firing platform, the SNIPER.<a><img decoding="async" align="right" data-src="http://sadefensejournal.com/wp-content/uploads/2014/04/article_end.png" class="lazy" src="data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%200%200'%3E%3C/svg%3E" /></a></p>
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