April 18th, 2018

Reading the Wind — Good Guidebook from M.Sgt. Jim Owens

Reading the Wind Jim Owens book CD DVD Creedmoor Sports

Readers often ask for a good, authoritative resource on doping the wind and reading mirage. Many of our Forum members recommended M.Sgt. Jim Owens’ Wind-Reading Book. With 22 sets of wind charts, this 166-page resource is offered for $14.95 in print format or $12.95 in CD format.

Owens’ Reading the Wind and Coaching Techniques clearly explains how to gauge wind speeds and angles. Owens, a well-known High Power coach and creator of Jarheadtop.com, offers a simple system for ascertaining wind value based on speed and angle. The CD also explains how to read mirage — a vital skill for long-range shooters. In many situations, reading the mirage may be just as important as watching the wind flags. Owens’ $12.95 CD provides wind-reading strategies that can be applied by coaches as well as individual shooters.

As a separate product, Owens offers a Reading the Wind DVD for $29.95.

NOTE: The Wind DVD product is completely different than Owens’ $12.95 CD. The DVD is like an interactive class, while the CD is basically an eBook.

Played straight through, the DVD offers about 75 minutes of instruction. M.Sgt. Owens says “You will learn more in an hour and fifteen minutes than the host learned in fifteen years in the Marine Corps shooting program. This is a wind class you can attend again and again. [It provides] a simple system for judging the speed, direction and value of the wind.” The DVD also covers mirage reading, wind strategies, bullet BC and more.

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January 30th, 2016

Wind Reading Resources from JarHeadTop’s M.Sgt. Jim Owens

Readers often ask for a good, authoritative resource on doping the wind and reading mirage. Many Forum members recommended M.Sgt. Jim Owens’ Wind-Reading Guide. With 22 sets of wind charts, this is offered for $14.95 as a printed book or $12.95 in CD format. Owens’ Reading the Wind and Coaching Techniques clearly explains how to gauge wind speeds and angles. Owens, a well-known High Power coach and creator of Jarheadtop.com, offers a simple system for ascertaining wind value based on speed and angle. The CD also explains how to read mirage — a vital skill for long-range shooters. In many situations, reading the mirage may be just as important as watching the wind flags. Owens’ $12.95 CD provides wind-reading strategies that can be applied by coaches as well as individual shooters.

As a separate product, Owens offers a Reading the Wind DVD for $29.95. This is different than the $12.95 CD. It is more like an interactive class.

Played straight through, the DVD offers about 75 minutes of instruction. M.Sgt. Owens says “You will learn more in an hour and fifteen minutes than the host learned in fifteen years in the Marine Corps shooting program. This is a wind class you can attend again and again. [It provides] a simple system for judging the speed, direction and value of the wind.” The DVD also covers mirage reading, wind strategies, bullet BC and more.

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September 6th, 2014

Long Range Shooting Simulation

Long Range Shooting SimulationShooterReady.com offers an excellent computer simulation that lets you “shoot” three different calibers at virtual ranges out to 2000 yards–complete with sound effects and realistic scenery. You view the target through a 10-20x zoom scope and adjust windage and elevation as with a real scope. A FREE Online Demo is available that lets you practice with a 175gr .308, and also Windrunner .338 and .50 BMG. Atmospheric conditions and range distance change with each stage, so there is plenty of challenge. Warning–if you’re at work, this can be addictive once you get the hang of it.

Long Range Shooting Simulation

You can practice Mil Dot ranging on 3 targets: A 12″ X 12″ swinging plate, a 30″ X 18″ knock-down plate, and a regulation 72″ X 19″ knock down plate. Each caliber has 70 range exercises, plus an advanced stage with 25 timed hold-offs, and moving targets.

The CD also includes “Interactive Classrooms” that teach you how to use Mil-Dot scopes and how to use a range card. The presentation on reading Mils and calculating target distances is very well done. It is much easier to learn interactively than by just reading a static manual. Below is a screenshot from the Mil-Dot Ranging “Classroom”.

Long Range Sim Interactive Classroom

Trust us, you can learn a great deal from the Free Demo. This is not just a shooter video game. The demo offers a variety of scenarios–enough to keep you occupied for quite some time. If you want to learn more, the full CD, with hundreds of scenarios, and five bonus stages, costs $43.95 from ShooterReady.com.

Permalink News, Shooting Skills 5 Comments »
April 4th, 2011

Second Edition of Litz Applied Ballistics Book Announced

Bryan LitzBryan Litz, author of Applied Ballistics for Long Range Shooting, is releasing a Second Edition of his highly respected treatise on Ballistics. The new book is complete, and Bryan Litz is currently taking orders through his AppliedBallisticsLLC.com website. Bryan plans to start shipping Second Editions on April 18, 2011. The Applied Ballistics (2d. Edition) book and CD, as a package, sell for $49.95 plus shipping.

CLICK HERE for Applied Ballistics (2d. Edition) Book Description.
CLICK HERE to Order Applied Ballistics for Long Range Shooting, 2d. Edition

New Edition is Bigger and Better
Along with all the impressive content from the original book, the Second Edition of Applied Ballistics contains more chapters, more pages, more test-derived bullet data, plus the updated Version 2.0 of the Point Mass Ballistics Solver software (on CD). The Second Edition is even physically bigger — Bryan has bumped up the size to a larger, easier-to-read 7″ x 10″ format. In the bigger book you’ll find two completely new chapters, plus updates of existing chapters. The Second Edition contains new experimental test data on 61 additional bullets, and bullet data pages now include complete stability data. Bryan has also included ballistic performance analysis for both long range hunting and long range target shooting.

A Gold-Mine of Information
If you’ve seen a copy of the First Edition, you’ll know that Bryan has assembled the “mother lode” of ballistics information, much of which is hard to find anywhere else. Heck, just getting Bryan’s field-test-derived bullet data may be worth the “price of admission” for many shooters. While the book goes into many advanced aspects of ballistics, this is not a graduate-level treatise. Bryan successfully created a book that can benefit any serious shooter, not just math wizards or college professors. Here are some of the many topics covered by Applied Ballistics (2d. Edition):

The Ballistic Coefficient
G1 vs. G7 BC Models
Bullet Shapes (Tangent vs. Secant)
Gravity Drop
Uphill/Downhill Shooting
Wind Deflection
Temperature/Pressure Effects

Monolithic Bullets (NEW)
Gyroscopic (Spin) Drift
The Coriolis Effect
Using Ballistics Programs
Getting Control of Sights
Bullet Stability
Extended Long Range Shooting

CD Provides Significantly Enhanced Software
Litz Point MassWith each copy of Applied Ballistics For Long Range Shooting (2d. Ed.), Bryan includes a CD containing Version 2.0 of the Point Mass Ballistics Solver. Combined with experimentally-measured BCs, this program can deliver extremely accurate trajectories and even calculate spin drift. In response to user requests, this 2.0 software update provides valuable new capabilities. First, now you can output trajectories in inches, centimeters, MOA or MILS. Take your pick — whichever you prefer. Second, the new software now provides bullet kinetic energy at all ranges. Last but not least, you can now easily print out your ballistics as a text file.


DEALER ORDERS: If you are interested in becoming a dealer, please email
bryan.litz [at] appliedballisticsllc.com for information on bulk-order discounts.

Disclosure: Applied Ballistics LLC Advertises with AccurateShooter.com.
Permalink Bullets, Brass, Ammo, New Product No Comments »
February 28th, 2009

Lapua Offers Radar-Tested Drag Data for Lapua Bullets

Lapua bullets BCThe Ballistic Coefficient (BC) of a bullet is an index number used to describe the bullet’s aerodynamic drag relative to a reference standard. While bullet manufacturers commonly include BCs in their product descriptions, often times those numbers are merely a mathematical calculation, rather than the result of actual testing. Also, since the true drag of a bullet changes over the course of its trajectory, using a single BC is a fairly primitive way to predict how that bullet will actually perform over a long distance.

Lapua is now using Doppler radar to provide a more sophisticated model of bullet flight. Lapua has issued drag coefficients for its bullets based on radar testing. Importantly, Lapua didn’t just calculate drag coefficients off bullet blueprints. Instead, Lapua used radar to measure bullet velocities at various points along the bullet flight path (trajectory). This provides Cd (Coefficient of Drag) values that can be used with advanced ballistic software such as QuickTARGET to calculate trajectories with great reliability and precision.

Lapua bullets BC

Lapua’s engineers explain: “With our Cd-data measured by continuous Doppler radar measurements you can calculate the trajectory of your bullet much more accurately than using the simplified one-number BC. Typically-used simple ballistic coefficient (BC) describes only ballistic performance of the bullet compared to old standard ‘G1′ bullet. Ballistic Coefficient is essentially a measure of drag force compared to G1 projectile. The higher the BC value, the less drag and better ballistic performance.

The BC changes during a projectile‘s flight and stated BCs are always averages for particular velocity ranges. Knowing how a BC was established is almost as important as knowing the stated BC value itself. For the precise establishment of bullet trajectory, Doppler radar-measurements are required. The normal shooter however, has no access to such expensive professional measurement devices.

The radar-measured Cd factor describes the aerodynamic drag at particular points of trajectory. A Cd table (see above) shows this factor as a function of velocity (Mach number). Special software is required (e.g. Quick Target Unlimited) to utilize this data to [generate a] ballistic table. During the Doppler radar measurements the complete location information versus time is recorded.”

Long-Range Tests Show Lapua’s Bullet Drag Models Work Well
One of our sources has been working with Lapua’s radar-derived ballistic data for over a year. His task was to see how calculated trajectories using Lapua’s stated Cd values for particular bullets compared to observed bullet flights at long range. Using the data for the Lapua 250gr Scenar, this tester found the predicted trajectory “dead on to 1600 meters (about a mile) and only a few click off [at] 2000 meter (1.25 mile) distances”.

Bullet Ballistic Info for Download

CLICK HERE for explanation of Doppler-derived Cd with sample charts.

CLICK HERE for Cd-data for Lapua bullets.

Permalink Bullets, Brass, Ammo, Tech Tip 7 Comments »