TrackingPoint, creator of the Precision Guided Firearm (PGF) system, has released a new “smart rifle”, the XS4 .338 Lapua Magnum. The XS4 boasts TrackingPoint’s revolutionary TTX (Tag Track Xact) technology — a system that automates aiming and ballistic correction once you have “tagged” the target with a laser beam. Along with the exotic computerized targeting system, the new XS4 features top-flight conventional components: Surgeon XL action, 27″ Krieger barrel, and McMillan A5 hunting stock. Full rifle weight including laser/digital/optical scope, two batteries, loaded magazine, muzzle brake, and bipod, is 22.5 pounds.
Like TrackingPoint’s XS1, the new XS4 has a maximum TTX range of 1,200 yards, the longest effective range offered by the company. The rifle’s 27-inch, Krieger cut-barrel is fitted in a traditional-style, adjustable McMillan A5 stock. It also features TrackingPoint’s highest-power zoom optic, offering 6x to 35X magnification. “Our customers have been asking for the power of our 338 Lapua Magnum smart rifles in the form factor of our popular XS3 hunting model,” said John Lupher, Chief Technology Officer for TrackingPoint. Pre-orders for the XS4 are now being accepted. The rifle will be demonstrated at the 2014 NSSF SHOT Show and other trade shows in 2014. To learn more about the XS4 Precision Guided Firearm, visit Tracking-Point.com.
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Thomas Haugland, a Shooters’ Forum member from Norway, is a long-range target shooter and hunter. He has created an interesting video showing how to gauge wind velocities by watching trees, grass, and other natural vegetation. The video commentary is in English, but the units of wind speed (and distance) are metric. Haugland explains: “This is not a full tutorial, but rather a short heads-up to make you draw the lines between the dots yourself”. Here are some conversions that will help when watching the video:
.5 m/s = 1.1 mph | 1 m/s = 2.2 mph | 2 m/s = 4.5 mph
3 m/s = 6.7 mph | 4 m/s = 8.9 mph | 5 m/s =11.2 mph
If you really want to learn about long-range hunting, listen to a pro, a man like Nathan Foster who has spent a life-time in the field. Nathan has just released a new book: The Practical Guide to Long Range Hunting Cartridges. You can trust what Nathan says. He has spent decades in the wild, harvesting over 7500 head of game. Nathan’s richly-illustrated, 415-page resource guides you through the process of choosing the best cartridge and projectile(s) for your hunts. The book begins by explaining the key principles of of long-range hunting. Then Nathan examines the pros and cons of various cartridges so that the reader can select the best cartridge and projectile to get the job done.
Nathan is truly a hunting expert. Nathan has spent thousands of hours in the field and he knows the subject cold. Unlike some outdoor writers, Nathan doesn’t pull punches — he tells the unvarnished truth about what works and what doesn’t. Here’s what Nathan says about his new book:
After many months of writing, it is now done, 415 pages of research, each bullet repeat-tested in the field, my research scrutinized by veterinarian surgeons [and] industry peers. It was truly an immense undertaking.
For several years, I have received two types of email. The first question is which is the right rifle for me? The second question is which is the right cartridge? My first book dealt with the accurate rifle. This second book deals with long range hunting cartridge selection. I firmly believe that there has been a huge gap in education regarding optimal long range hunting cartridge performance. In many instances, both hunters and bullet manufacturers do not understand what’s required to achieve goals. Many times, the wrong tools are used for long range hunting. This book seeks to remedy these problems.
In the Practical Guide to Long Range Hunting Cartridges, I start with the fundamentals of game killing — but from the perspective of the long range hunter (also encountering close range shots). This section is not politically correct in any way, as after the study of anatomy, I explore worst case scenarios in as much depth as ideal shot placement.
The second section of the book is a study of projectile design. I wanted to get right down to the finer details of the long range hunting bullet in this section, exploring manufacturers, manufacturing techniques, and ways in which the end user can perform preliminary testing as well as bullet modifications.
The third section explains how to select a long range hunting cartridge. The system I have used here is based on a selection method I developed over the years to help clients worldwide. This method takes individual circumstances into consideration rather than a one size fits all approach. It is a system that relies on plain common sense based on research.
The fourth section of the book is the cartridge section. Cartridge information is presented in a set format with Pro/Con summary tables. In many instances I have included my own load notes. I have also included notes regarding how to approach close range shots with each of our long range cartridges.
Book Buyer Comment: “Nathan has ‘hit it out of the park’ with his 2nd book, The Practical Guide to Long Range Hunting Cartridges! This is definitely the ‘go-to’ manual for decision-making for hunters around the world. Where else can you fine such a wealth of information on bullet selection for a particular cartridge based on the weight of the animal you intend to pursue. This allows the hunter to make an educated decision on the best cartridge for a particular game species or to load that round, up or down, to cover a variety of game species in their location.” — Jim Moseley, North Carolina, USA
About the Author: New Zealander Nathan Foster lives and breathes what he teaches. An expert in the field of terminal ballistics, Nathan has taken over 7500 head of game, and has field-tested a vast number of cartridges and projectiles. Nathan’s first book, The Practical Guide to Long Range Hunting Rifles, is widely recognized as one of the best books ever published on the subject. The new book goes into greater detail on specific cartridges. Nathan’s website includes an outstanding online cartridge knowledge base with over 60 detailed cartridge profiles. CLICK HERE for Cartridge INFO.
The pessimist complains about the wind; the optimist expects it to change; the realist adjusts the sails.” — William Arthur Ward
Readers often ask us: “Is there a decent, easy-to-comprehend book that can help my wind-reading?” Many of our Forum members have recommended The Wind Book for Rifle Shooters by Linda Miller and Keith Cunningham. This 146-page book, published in 2007, is a very informative resource. But you don’t have to take our word for it. If you click this link, you can read book excerpts and decide for yourself. When the Amazon page opens, simply click the book cover (labeled “Look Inside”) and another screen will appear. This lets you preview the first few chapters, and see some illustrations.
Other books cover wind reading in a broader discussion of ballistics or long-range shooting, such as Applied Ballistics for Long-Range Shooting by Bryan Litz. But the Miller & Cunningham book is ALL about wind reading from cover to cover, and that is its strength. The book focuses on real world skills that can help you accurately gauge wind angle, wind velocity, and wind cycles.
All other factors being equal, it is your ability to read the wind that will make the most difference in your shooting accuracy. The better you understand the behavior of the wind, the better you will understand the behavior of your bullet. — Wind Book for Rifle Shooters
The Wind Book for Rifle Shooters contains straightforward guidance on the thought processes, techniques, and tactics used by expert wind-readers. The written text is supplemented by numerous easy-to-understand charts and illustrations. The authors show you how to put together a simple wind-reading “toolbox” for calculating wind speed, direction, deflection and drift. Then they explain how to use these tools to read flags and mirage, record and interpret your observations, and time your shots to compensate for wind. The essential wind-reading basics taught in this book can definitely help any shooter. Here are some reviews from actual book buyers:
I believe this is a must-have book if you are a long-range sport shooter. I compete in F-Class Open and when I first purchased this book and read it from cover to cover, it helped me understand wind reading and making accurate scope corrections. Buy this book, read it, put into practice what it tells you, you will not be disappointed. — P. Janzso
If you have one book for wind reading, this should be it. Whether you’re a novice or experienced wind shooter this book has something for you. It covers how to get wind speed and direction from flags, mirage, and natural phenomenon. The book also details methods for recording shots and improving your shooting and thus your wind reading skills. In my opinion this is the best book for learning to read wind speed and direction. — Muddler
I found this book to be something I have needed for quite a while. I have been shooting Long Range for 20 years and always had problems with the wind. I would just chase the spotter. This book makes it all make sense. — L. Cash
As far as I know this is the only book of its type. It’s very well written in a way that’s easy to understand for such a complex subject. The charts and graphs are extremely helpful. It’s a bit on the short side at about 146 pages but still packed with knowledge. — R. Johnson
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Read Comments on Sniper’s Hide Forum
Also, there is a thread on the Snipers Hide Forum in which Applied Ballistics and Kestrel Pro Staff are responding to questions/issues related to use of the Applied Ballistics Kestrels.
Bryan Litz of Applied Ballistics LLC wants to express appreciation for Kestrel users who have posted input: “Thanks to the users who provided valuable feedback that was used to make the product better.”
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As you may know already, Bryan Litz of Applied Ballistics LLC has produced an excellent 3-Disc DVD set entitled Putting Rounds on Target. When one views the end result one can forget the hard work and tribulations that go into making such a production. Sometimes Mother Nature doesn’t cooperate when the crew is out at the range.
Bryan tells us:
“Filming for ‘Putting Rounds on Target’ proved to be a bit more challenging then we had expected. For this segment in the third disk, we packed up and set up everything over half a dozen times to keep the camera and shooting equipment dry as the sun played Peek-a-boo behind rain clouds. The chilled temperatures, required a lot of hot coffee, but the lack of restrooms made for a long day. In the end, it was totally worth it!
Watch Trailer Video of Putting Rounds on Target DVD Set
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Horizontal Wind-Drift vs. Distance
OK, here’s a challenge question for you.
Let’s see if you get it right.
Q: If the wind is blowing 10 mph from 9 o’clock and if my horizontal wind deflection is 0.7 inches at 100 yards, what is the horizontal drift at 1000 yards?
You may be thinking, “Well, since the target is ten times more distant, the wind-drift should be around 7 inches, maybe a little more since the bullet will be slowing down.” That sounds reasonable, right?
As you move from near to far, the increase in lateral deflection (from a 90° crosswind) is (roughly speaking) a function of the square of the multiple of distance. If your target is two times farther away, you use the square of two, namely four. If your target is five times farther away, you use the square of five, or twenty-five. In this example, the increased wind drift (from 100 to 1000 yards) is at least 0.7″ times (10 X 10) — over 70 inches (give or take a few inches depending on bullet type). We call that the Rule of the Square. This Rule lets you make a quick approximation of the windage correction needed at any yardage.
Precision Shooting and the Rule of the Square
I was going through some back issues of Precision Shooting Magazine and found many references to the Rule of the Square. This made me curious — I wondered how well the Rule really stacked up against modern ballistics programs. Accordingly, I ran some examples through the JBM Ballistics Trajectory Calculator, one of the best web-based ballistics programs. To my surprise, the Rule of the Square does a pretty good job of describing things.
EXAMPLE ONE — .308 Win (100 to 400 Yards)
For a 168gr Sierra MK (.308), leaving the muzzle at 2700 fps, the JBM-predicted values* are as follows, with a 10 mph, 9 o’clock crosswind (at sea level, 65° F, Litz G7 BC):
Drift at 100: 0.8 MOA (0.8″)
Drift at 200: 1.6 MOA (3.3″)
Drift at 400: 3.4 MOA (14.4″)
Here you can see how the Rule of the Square works. The rule says our drift at 200 yards should be about FOUR times the drift at 100. It the example above, 0.8″ times 4 is 3.2″, pretty darn close to the JBM prediction of 3.3″. Quoting Precision Shooting: “Note that the deflections at 100 yards are typically a quarter of those at 200; lateral deflections increase as the square of the range”. Precision Shooting, June 2000, p. 16.
EXAMPLE TWO — .284 Win (100 to 1000 Yards)
For a .284 Win load, with the slippery Berger 180gr Target Hybrids, the Rule of the Square still works. Here we’ll input a 2750 fps velocity, Litz G7 BC, 10 mph, 9 o’clock crosswind, (same 65° temp at sea level). With these variables, JBM predicts:
Drift at 100: 0.5 MOA (0.5″)
Drift at 500: 2.5 MOA (13.3″)
Drift at 1000: 5.9 MOA (61.3″)
Again, even with a higher BC bullet, at 1000 yards we end up with something reasonably close to the 100-yard deflection (i.e. 0.5″) multiplied by (10×10), i.e. 50 inches. The Rule of the Square alerts you to the fact that the effects of crosswinds are MUCH greater at very long range. In this example, our JBM-calculated drift at 1000 is 61.3″ — that’s over 100 times the 100-yard lateral drift, even though the distance has only increased 10 times.
Note that, even with a 5 mph 90° sidewind, the “Rule of the Square” still applies. The 1000-yard lateral deflection in inches is still over 100 times the lateral deflection at 100 yards.
Why This All Matters (Even in the Age of Smartphones)
Now, some would say, “Why Should I Care About the Rule of the Square? My iPhone has a Ballistics App that does all my thinking for me”. Fair enough, but knowledge of this basic Rule of the Square enables a shooter to make an informed guess about necessary windage even without a come-up sheet, as long as he knows the distance AND can fire a sighter at 100 or 200 yards as a baseline.
For example, if I see empirically that I need 1″ windage correction at 100 yards, then I know that at 600 yards I need at least roughly (6 x 6 x 1″) or 36 total inches of drift correction, or 6 MOA. (To be precise, 1 MOA = 1.047″ at 100 yards). I can figure that out instantly, even without a ballistics chart, and even if my Smartphone’s battery is dead.
*Values shown are as displayed on the JBM-figured trajectory tables. The numbers can be slightly imprecise because JBM rounds off to one decimal place for both inches and MOA.
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Lapua has done extensive field testing of its bullets, using sophisticated Doppler radar equipment. Employing radar, Lapua has logged actual observed trajectories with a variety of bullet and cartridge types. And Lapua has just released updated radar data for Scenar-L bullets used with 6.5×47 Lapua, 6.5×55 Swede, and .308 Winchester chamberings. You’ll find this new data incorporated into Lapua’s product description tables for these three cartridge types.
You will also find both G1 and G7 BCs for the new line of Scenar-L Bullets in Lapua’s updated Components Table. Ballistic coefficients are based on Doppler radar data and calculated by Quick Target Unlimited Lapua Edition.
To find the BC for a particular bullet, go to the Components Table, select the caliber (on the left) and then look for the G1 or G7 value on the right for particular bullets. For example, the BCs for the new 136gr 6.5mm Scenar-L are 0.545 (G1) and 0.274 (G7).
If you are looking for the most precise trajectory predictions, nothing beats real-world testing like this. Bullet BCs can be calculated, “on paper”, from bullet size, weight, and shape. However, in the ‘real world’ the actual aerodynamic drag forces acting on the bullet change with velocity and other variables. Therefore, a bullet’s BC is NOT actually constant at every point in its flight path. Doppler radar allows Lapua to observe the actual drop of bullets at multiple points along their trajectory.
How much more precise are Doppler-radar-based trajectory predictions than typical drop charts based on modeled BCs? Consider this… when you plug the radar-based numbers for a .338 Lapua Magnum into Lapua’s ballistics software, the error in elevation is less than 2.5 cm (1″) at 1,500 meters. By contrast, the error based on a traditional G1 BC model could be over 1 meter (i.e. more than 40 inches).
Free Lapua Ballistics Software for Android OS Devices
If you want to use Lapua’s Doppler Radar data for your own ballistics calculations — there’s a App for that. Lapua’s Quick Target Unlimited (QTU) software for Android OS can be downloaded for free from the Android Market. Predicted trajectories for this software are based on precise Doppler radar ballistic measurements of Lapua bullets, making this program much more accurate than other ballistic programs for mobile phones. Note, however, the Doppler Radar data is offered ONLY for Lapua-made bullets. This App does NOT include radar data for Berger, Sierra or other brands of bullets.
Product tip from EdLongrange. We welcome reader submissions.
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Well, yes, that headline is a come-on. But there’s truth in the promise. The “miracle device” to which we refer is a simple wind indicator aka “windflag”. Remarkably, many shooters who spend $3000.00 or more on a precision rifle never bother to set up windflags, or even simple wood stakes with some ribbon to show the wind. Whether you’re a competitive shooter, a varminter, or someone who just likes to punch small groups, you should always take a set of windflags (or some kind of wind indicators) when you head to the range or the prairie dog fields. And yes, if you pay attention to your windflags, you can easily cut your group sizes in half. Here’s proof…
Miss a 5 mph Shift and Double Your Group Size
The table below records the effect of a 5 mph crosswind at 100, 200, and 300 yards. You may be thinking, “well, I’d never miss a 5 mph let-off.” Consider this — if a gentle 2.5 mph breeze switches from 3 o’clock (R to L) to 9 o’clock (L to R), you’ve just missed a 5 mph net change. What will that do to your group? Look at the table to find out.
Values from Point Blank Ballistics software for 500′ elevation and 70° temperature.
Imagine you have a 6mm rifle that shoots half-MOA consistently in no-wind conditions. What happens if you miss a 5 mph shift (the equivalent of a full reversal of a 2.5 mph crosswind)? Well, if you’re shooting a 68gr flatbase bullet, your shot is going to move about 0.49″ at 100 yards, nearly doubling your group size. With a 105gr VLD, the bullet moves 0.28″ … not as much to be sure, but still enough to ruin a nice small group. What about an AR15, shooting 55-grainers at 3300 fps? Well, if you miss that same 5 mph shift, your low-BC bullet moves 0.68″. That pushes a half-inch group well past an inch. If you had a half-MOA capable AR, now it’s shooting worse than 1 MOA. And, as you might expect, the wind effects at 200 and 300 yards are even more dramatic. If you miss a 5 mph, full-value wind change, your 300-yard group could easily expand by 2.5″ or more.
Forest of Windflags at World Benchrest Championships in France in 2011
If you’ve already invested in an accurate rifle with a good barrel, you are “throwing away” accuracy if you shoot without wind flags. You can spend a ton of money on fancy shooting accessories (such as expensive front rests and spotting scopes) but, dollar for dollar, nothing will potentially improve your shooting as much as a good set of windflags, used religiously.
The web-based JBM Ballistics Program is one of the most sophisticated and accurate ballistics calculators available — and it’s free. The latest version of the JBM Trajectory Calculator includes field-test-derived actual G7 BCs, as well as bullet drag data from Lapua’s Doppler radar testing. You can also change weather variables, and generate come-up tables for distances out to 3000 yards.
Whenever we have web access, the JBM program is our “go-to” resource for dependable ballistics calculations. In our experience, with most bullets, if you input all the correct variables for the JBM program, it should get you within 1/2 moa (2 clicks), at 600 yards.
New URLs for JBM Ballistics Calculators
With the release of the latest version of the JBM program, some URLs for the calculations pages have changed. You may want to update your bookmarks with the following web addresses:
Kestrel 4500 Shooter’s Weather Meters with integrated Applied Ballistics software are finally shipping. Bryan Litz, founder of Applied Ballistics LLC, reports: “Long range shooting just got a little easier. We are pleased to announce that the Applied Ballistics Kestrels have arrived! They are now available for immediate shipment. Pre-orders will ship today.” To order, follow this link for the Applied Ballistics Store.
These Kestrel 4500 Shooter’s Weather Meters include a full-featured ballistics solver and databases of bullets so you can accurately plot trajectories. The Applied Ballistics software accesses the environmental data (wind speed, humidity, altitude etc.) recorded by the Kestrel to provide a more precise trajectory.
Features of Kestrel 4500 with Applied Ballistics Software
With integrated Applied Ballistics software, Kestrel users are now able to select from either G1 or G7 ballistic coefficients (BC) when calculating a trajectory. The new Kestrel 4500 Shooter’s Weather Meter also offers the very extensive “Litz”-measured BC library of over 225 bullets. In addition to these features, users can “train” the software to match a specific rifle based on observed impacts at long range with the ballistics calibration feature. With more accurate BC data, shooters are empowered to make more precise trajectory calculations. The new Kestrel Shooter’s Weather Meter can also receive data from wind sensor arrays designed and sold by Applied Ballistics. Like all Kestrels, the Shooter’s Weather Meter is IP67 waterproof and ruggedized to MIL-STD-810F standards.
Every Kestrel meter is pocket-sized, rugged, accurate, waterproof, easy-to-use, and backed by an industry-leading, five-year warranty.
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Bryan Litz, author of two leading books on practical rifle ballistics, has produced a 3-disc multi-media DVD: Putting Rounds on Target. We’ve previewed this new DVD set from Applied Ballistics. The DVDs are very thorough and very well-made. This is an important product release — there is nothing like it on the market. If you are a serious long-range shooter, put this DVD set on your wish list. Even if you own one or both of Bryan’s books, we know you can benefit from this product. The DVD format provides many graphic aids and video clips that illustrate key principles being covered. The three DVDs deliver as much information as a weekend shooting seminar… at a fraction of the cost.
The 3-disc DVD set costs just $39.95. That’s a bargain. Many shooting-related DVDs, with much less information, cost as much (or more) for a single disc. Putting Rounds on Target includes THREE discs, with a total run-time of 3 hours and 37 minutes. Plus, in addition, Bryan is tossing in a fourth, BONUS disc with 40 minutes of match coverage from the Berger SW Nationals. This documentary-style DVD highlights individual and team competition in Sling, F-Open and F-TR classes.
Watch Video Preview of Applied Ballistics 3-DVD Set
Bryan tell us that his new DVD set was designed to give shooters the technical knowledge that will improve their scores on the target: “We explain the science involved in putting rounds on target at long range. After a classroom-type presentation (on video), we demonstrate the principles in live fire at the range with three different rifles (.308 Win, .284 Win, and .338 LM). In the end, DVD viewers will have the information and techniques required to master this technical subject matter. Follow along as the science is applied on the range to hit targets from 100 yards to a mile (1760 yards) with different rifles and ballistic solutions.”
Accuracy & Precision
Tall Target Test
Chronographs & Statistics
Run Time: 1 hour, 4 min
Primary Elevation Influences Wind
Using Ballistics Solvers
Short & Long Range Equipment
Run Time: 1 hour, 11 min
On The Range: .308 Win
On The Range: .284 Win
On The Range: .338 LM
Extended Range Shooting
Equipment for Extended Range Shooting
One Mile Shooting
Run Time: 1 hour, 22 min
FREE BONUS DISC
The Applied Ballistics instructional DVD set also includes a fourth BONUS disc: Long Range Competition: It’s Worth It. Filmed at the 2013 Berger SW Long Range Nationals, this 40-minute video DVD shows NRA long-range target shooting in Sling, F-TR, and F-Open divisions. Both individual and team competition are featured. If you like competitive shooting, you’ll enjoy this bonus disc.