Applied Ballistics (AB) has published an update to its Bullet Library, which can be accessed from all AB-enabled devices, including the AB Quantum App. The library updates are based on testing with Doppler radar. The bullet updates are based on averaging of multiple Doppler Radar tests at long range (through transonic). All of the bullets that were recently updated have been tested multiple times from various different barrels and twist rates to find the average performance. These updates to the bullet library are FREE to those who have subscribed to AB Quantum.
The AB team explained that these updates will help provide the most accurate ballistic fire solutions available. Ongoing updates are planned as AB continues testing and compiling results.
“Many of our existing bullets were modeled after just one test, but after a few years of testing out of multiple guns, we have a much better assessment of the bullets’ average performance and those models replace the originals. Rest assured, when we update a bullet model, it does NOT affect an existing gun profile. It’s only new gun profiles that get built — they’ll pull the updated performance. So [there is] no need to worry about your established data changing within an existing gun profile.”
Updates to the Applied Ballistics Bullet Library are normally made whenever:
* AB tests new bullets
* AB Accumulates more test data on existing bullets
* AB runs tests to further ranges than previous tests
Typically, changes to assessed performance are small (under 2%) representing only about 1 or 2 clicks of difference at 1000 yards. But sometimes the shift is more substantial.
Bryan Litz added: “The updates don’t always change performance a lot, some are just small tweaks. Typically you would build a new gun profile from selecting the bullet in the library to get the new performance. But if you’re using BC, you can just transcribe the new one into your existing gun profile.”
DRVT — DRAG VARIABILITY REDUCTION TECHNOLOGY
Using Doppler radar and Schlieren imagery, Hornady engineers have developed and patented Drag Variability Reduction Technology (DVRT) to increase the uniformity of bullet drag from shot to shot, resulting in less dispersion at long range.
While analyzing thousands of Doppler radar drag curves, Hornady’s ballisticians isolated a bullet tip design that would reduce the variation in drag from bullet to bullet. Specifically, the meplat must be flat – not pointed – and the diameter of the flat meplat is a specific ratio to the bullet diameter. Tests showed that a flat end of the bullet tip provided more consistent drag.
Upon refinement of this design feature in late 2018, DVRT was implemented into all bullets using the Heat Shield Tip and the A-Tip Match bullet. While DVRT was patent pending, shooters quietly benefited from this design for several years. Now with the patent issued, Hornday has published the details of Drag Variability Reduction Technology on its website. And the hour-long Hornady Podcast embedded below explains how DVRT was developed from extensive field research with Doppler radar.
Bullets with Drag Variability Reduction Technology:
As does Lapua and some other leading bullet-makers, Barnes now uses radar to determine bullet BC values and ballistic data for its match bullets and ammunition. Barnes employs advanced Doppler Radar to record bullet speeds at multiple distances out to 1500 yards.
The Doppler radar system gathers thousands of data points as a bullet flies downrange. This radar data is used to generate a bullet specific drag curve, and then fed into a modern 6 Degree of Freedom (DOF) [ballistics software program] to generate precise firing solutions.
Determining Bullet Ballistics with Doppler Radar Data
How do you build better (more precise) ammo drop tables? With radar, that’s how. Barnes Bullets is using Doppler Radar to develop the drop tables for its Precision Match line of factory ammunition. The Doppler radar allows Barnes to determine actual velocities at hundreds of points along a bullet’s flight path. This provides a more complete view of the ballistics “behavior” of the bullet, particularly at long range. Using Doppler radar, Barnes has learned that neither the G1 nor G7 BC models are perfect. Barnes essentially builds a custom drag curve for each bullet using Doppler radar findings.
Use of Doppler Radar to Generate Trajectory Solutions
by Barnes Bullets, LLC
Typical trajectory tables are generated by measuring only two values: muzzle velocity, and either time-of-flight to a downrange target, or a second downrange velocity. Depending on the test facility where this data is gathered, that downrange target or chronograph may only be 100 to 300 yards from the muzzle. These values are used to calculate the Ballistic Coefficient (BC value) of the bullet, and the BC value is then referenced to a standardized drag curve such as G1 or G7 to generate the trajectory table.
This approach works reasonably well for the distances encountered in most hunting and target shooting conditions, but breaks down rapidly for long range work. It’s really an archaic approach based on artillery firings conducted in the late 1800s and computational techniques developed before the advent of modern computers.
There is a better approach which has been utilized by modern militaries around the world for many years to generate very precise firing solutions. Due to the sizeable investment required, it has been slow to make its way into the commercial market. This modern approach is to use a Doppler radar system to gather thousands of data points as a bullet flies downrange. This radar data is used to generate a bullet specific drag curve, and then fed into a modern 6 Degree of Freedom (DOF) [ballistics software program] to generate precise firing solutions and greatly increase first-round hit probability. (The 6 DOF software accounts for x, y, and z position along with the bullet’s pitch, yaw, and roll rates.)
Bullet-Specific Drag Curves Derived from Radar Data
Barnes’ advanced Doppler radar system can track bullets out to 1500 meters, recording the velocity and time of flight of that bullet every few feet along the flight path. The noteworthy graph below shows a Doppler Radar-derived, bullet-specific drag curve alongside the more common G1 and G7 curves:
Neither of the standard curves is a particularly good match to our test bullet. In the legacy approach to generating a downrange trajectory table, the BC value is in effect a multiplier or a fudge factor that’s used to shift the drag curve of the test bullet to try and approximate one of the standard curves. This leads to heated arguments as to which of the standardized drag curves is a better fit, or if multiple BC values should be used to better approximate the standard curve (e.g., use one BC value when the velocity is between Mach 1 and Mach 2, and a different BC value when the velocity is between Mach 2 and Mach 3.) Barnes’ approach to creating trajectory tables is to generate bullet-specific drag curves, and use that data directly in a modern, state-of-the-art, 6 DOF ballistics program called Prodas to generate the firing solution.
Story tip from EdLongrange. We welcome reader submissions.
The team from Applied Ballistics will offer ballistics services at major matches in 2024. The team will have its advanced Doppler Radar unit which can provide ultra-precise custom ballistic profiles.
Applied Ballistics (AB) has announced the initial deployment schedule for the Applied Ballistics Mobile Laboratory during the 2024 shooting season. The Applied Ballistics Crew will be driving the Mobile Lab Truck and Trailer to a number of important shooting events in 2024. At these events you can get a Personal Drag Model (PDM) for your rifle/load based on Doppler Radar testing. NOTE: You must be actually competing at one of the listed events in order to participate and get a PDM. The first listed deployment will be at the NRL Hunter match in Montana on May 17, 2024. Here is the initial 2024 schedule:
May 17, 2024: Belt, Montana – NRL Hunter
June 7, 2024: Casper, Wyoming – Nightforce ELR
September 11-12, 2024: Grand Junction, Colorado – IPRF World Championships
The Applied Ballistics Mobile Lab trailer carries a vast array of equipment including computers, sensors, and advanced Doppler Radar equipment. The Doppler Radar is employed to create custom ballistic profiles (aka “Personal Drag Models”) for shooters at major matches.
In this video series host Sean Utley covers many gear-related topics including rifle configuration, scope selection, chambering choices, ammunition options, bipods/tripods, and chronographs. In addition, the series covers training methods, bullet ballistics, wind reading, and rifle handling.
Most of this is pretty basic stuff, but it can be helpful for newcomers to long range shooting. For example, Season 3 Episode 1 covers rifle set-up and fitting, so you can set LOP, cheek height, and scope position optimally. And Season 1 Episode 4 covers chambering choices such as 6.5 Creedmoor and .308 Winchester.
Season 1, Episode 5: Anatomy of Bullet Flight
This is a cool video that shows ballistics testing at the Barnes Bullets underground testing lab. The video also includes interesting 3D animations showing how bullets run through a barrel and then fly down-range.
Season 1, Episode 6: Critical Equipment for Long Range Shooting
If you’re getting started in Long Range Precision Shooting, this video is worth watching. The video covers key equipment for long range shooting, including LabRadar chronograph, tripods, spotting scope, and mobile Ballistics Apps.
Season 1, Episode 1: Anatomy of a Long Range Precision Rifle
Season 3, Episode 1: Gun Fitting
Season 2, Episode 6: Choosing the Right Optic
Season 1, Episode 3: Mechanics of Long Range Shooting
Season 1, Episode 4: Best Calibers for Long Range Shooting
Watch All 17 Long Range Precision Videos
Along with the seven videos linked above, ten other Long Range Precision videos can be watched via the Ballistic Magazine Video Archive. And if you are interested in learning how Doppler Radar is used to develop bullet designs, we recommend Episode 7 from Season 2. This 7-minute video covers the latest technology in ballistics radar. CLICK HERE to watch video.
A major ELR match took place this past weekend in Wyoming, the Nightforce ELR Steel Challenge. A familiar name finished first — Applied Ballistics founder Bryan Litz. Bryan had a convincing victory over some 220 other shooters. Bryan earned praise from his colleague and past K02M winner Mitchell Fitzpatrick: “Congrats to Bryan Litz on winning the 2021 Nightforce ELR Steel Challenge! This match is tough, and winning it is no small feat… especially considering there were 221 competitors this year. Bryan and I were both shooting Barrett MRADs in .300 Norma with Nightforce 5-25 ATACR scopes, shooting Berger Bullets 245gr Elite Hunters pushed by VV N565. Absolutely killer combination.”
The match was held June 12-13 2021, at the Tillard 55 Ranch near Casper, Wyoming. This major ELR competition feature some amazing terrain, plus targets out to 2100 yards.
After the match, Bryan told us: “I learned a lot shooting this match last year. Came back with a better plan and more suitable equipment (stock Barrett MRAD in .300 Norma Magnum, Berger 245gr Hybrids, Vihtavuori N565). I also got a lot of great advice from my team-mates who are more experienced in this kind of competition. For ballistics I ran the Garmin Tactix with the Personal Drag Model (PDM) from Radar testing on Friday — it was SPOT ON.
Thanks to Scott Satterlee and his awesome crew of ROs. This match takes a lot of work to set up. Also thank Nick Setting and all the sponsors… especially title sponsor Nightforce. Looking forward to coming back next year!”
Here’s Bryan taping data to his rifle — a tip he got from Chase Stroud.
Personal Drag Models Set with Doppler Radar
Bryan Litz wasn’t just there to compete. Prior to the match Bryan and his Applied Ballistics Team helped competitors develop custom Long Range Ballistics curves for their loads and rifles. This was done with sophisticated Doppler Radar units. As Bryan noted: “Doesn’t get any better than a [ballistics] model built from a Radar track of YOUR bullets from YOUR rifle, the day before the match.”
During Personal Drag Model testing, participants would shot 10 rounds under the Radar. Once the PDM data was gathered, Bryan explained to the testers how to use the custom curve with Applied Ballistics software.
Match Was a Sell-Out with Huge Prize Table
Was this a popular event? Does this ELR stuff generate interest among commercial sponsors?
Absolutely. With 221 shooters, the event was a “sell-out”, with many folks who had to be turned away. The list of sponsors is staggering — over 60 companies — so the prize tables were over-flowing with gear. With great scenery and this treasure trove of prizes, we understand why the match is so popular.
2021 Nightforce ELR Steel Challenge Sponsors
Accuracy International USA
Alamo Precision Rifles
American Precision Arms
American Rifle Company, Inc.
Applied Ballistics LLC
BadRock Rifles
Barrett
Bartlein Barrels, Inc
Bison Tactical
Bix’n Andy USA
Blue Mountain Precision
Brux Barrels
Bullet Central
Burris Optics
Cole-Tac
Cutting Edge Bullets
Defiance Machine
Elite Iron
Foundation Stocks
Garmin
GRAYBOE
Gunwerks
Hawkins Precision
Hawk Hill Custom
Hornady
H-S Precision
Impact Shooting
Kahles North America
Kelbly’s Actions
Kestrel Ballistics
KMW Long Range Solutions
Kreiger Barrels
Leupold Optics
Lilja Precision Rifle Barrels
Lone Peak Arms
Magnetospeed LLC
Modular Driven Technologies – MDT
Mile High Shooting Accessories
Nightforce Optics
Precision Rifle Works
PROOF Research
Really Right Stuff SOAR
Reasor Precision
Sako
Sawtooth Rifles
SilencerCo
SPUHR
SWAROVSKI OPTIK Hunting
Revic
Terminus Actions
Tikka
Timney Triggers
Triggertech
U.S. Optics
Vapor Trails
Warhorse Development
Warner Tool Company
West Texas Ordnance
WieBad.com
XLR Industries
Zermatt Arms
ZRO Delta
Long Range Precision (LRP) is a useful series of videos product by Ballistic Magazine and sponsored by Remington, Barnes Bullets, and Eotech. All six of the Season 1 LRP videos are embedded below for easy “binge watching”. In addition, all seven Season 2 episodes can be watched online on BallisticMag.com.
In this video series host Sean Utley covers many gear-related topics including rifle configuration, scope selection, chambering choices, ammunition options, bipods/tripods, and chronographs. In addition, the series covers training methods, bullet ballistics, wind reading, and rifle handling.
Most of this is pretty basic stuff, but it can be helpful for newcomers to long range shooting. For example, Season 1 Episode 4 covers chambering options including 6.5 Creedmoor and .308 Winchester.
Season 1, Episode 1: Anatomy of a Long Range Precision Rifle
Season 1, Episode 2: Foundations of Long Range Shooting
Season 1, Episode 3: Mechanics of Long Range Shooting
Season 1, Episode 4: Best Calibers for Long Range Shooting
Season 1, Episode 5: Anatomy of Bullet Flight
Season 1, Episode 6: Critical Equipment for Long Range Shooting
Watch Latest Long Range Precision Season 2 Videos
Along with all these Season 1 videos, there are seven Season 2 videos available on BallisticMag.com. Season 2, Episode 2 is a good video on Adjusting for Wind. And if you are interested in learning how Doppler Radar is used to develop bullet designs, we recommend Episode 7 from Season 2. This 7-minute video covers the latest technology in ballistics radar. CLICK HERE to watch video.
NOTE: Barnes has just opened a new e-Commerce site where you can buy Barnes bullets direct from the manufacturer. To mark that development, we’re republishing an interesting article on how Barnes develops BC values and ballistic data for its match bullets and ammunition. Barnes employs advanced Doppler Radar to record bullet speeds at multiple distances out to 1500 yards.
Determining Bullet Ballistics with Doppler Radar Data
How do you build better (more precise) ammo drop tables? With radar, that’s how. Barnes Bullets is using Doppler Radar to develop the drop tables for its Precision Match line of factory ammunition. The Doppler radar allows Barnes to determine actual velocities at hundreds of points along a bullet’s flight path. This provides a more complete view of the ballistics “behavior” of the bullet, particularly at long range. Using Doppler radar, Barnes has learned that neither the G1 nor G7 BC models are perfect. Barnes essentially builds a custom drag curve for each bullet using Doppler radar findings.
Use of Doppler Radar to Generate Trajectory Solutions
by Barnes Bullets, LLC
Typical trajectory tables are generated by measuring only two values: muzzle velocity, and either time-of-flight to a downrange target, or a second downrange velocity. Depending on the test facility where this data is gathered, that downrange target or chronograph may only be 100 to 300 yards from the muzzle. These values are used to calculate the Ballistic Coefficient (BC value) of the bullet, and the BC value is then referenced to a standardized drag curve such as G1 or G7 to generate the trajectory table.
This approach works reasonably well for the distances encountered in most hunting and target shooting conditions, but breaks down rapidly for long range work. It’s really an archaic approach based on artillery firings conducted in the late 1800s and computational techniques developed before the advent of modern computers.
There is a better approach which has been utilized by modern militaries around the world for many years to generate very precise firing solutions. Due to the sizeable investment required, it has been slow to make its way into the commercial market. This modern approach is to use a Doppler radar system to gather thousands of data points as a bullet flies downrange. This radar data is used to generate a bullet specific drag curve, and then fed into a modern 6 Degree of Freedom (DOF) [ballistics software program] to generate precise firing solutions and greatly increase first-round hit probability. (The 6 DOF software accounts for x, y, and z position along with the bullet’s pitch, yaw, and roll rates.)
Bullet-Specific Drag Curves Derived from Radar Data
Barnes’ advanced Doppler radar system can track bullets out to 1500 meters, recording the velocity and time of flight of that bullet every few feet along the flight path. The noteworthy graph below shows a Doppler Radar-derived, bullet-specific drag curve alongside the more common G1 and G7 curves:
Neither of the standard curves is a particularly good match to our test bullet. In the legacy approach to generating a downrange trajectory table, the BC value is in effect a multiplier or a fudge factor that’s used to shift the drag curve of the test bullet to try and approximate one of the standard curves. This leads to heated arguments as to which of the standardized drag curves is a better fit, or if multiple BC values should be used to better approximate the standard curve (e.g., use one BC value when the velocity is between Mach 1 and Mach 2, and a different BC value when the velocity is between Mach 2 and Mach 3.) Barnes’ approach to creating trajectory tables is to generate bullet-specific drag curves, and use that data directly in a modern, state-of-the-art, 6 DOF ballistics program called Prodas to generate the firing solution.
Story tip from EdLongrange. We welcome reader submissions.
The folks at Applied Ballistics have a new toy — a large trailer filled with all the latest and greatest tech gear for testing long-range ballistics. Bryan Litz reported: “The maiden voyage for the AB Mobile Lab in Texas this week was a huge success! We look forward to supporting more long range shooting events.” Mitchell Fitzpatrick was there in the Lone Star state with fellow Applied Ballistics staffer Christopher Palka. The Applied Ballistics team will be trailering the Mobile Lab to Indiana where it will be on hand for the NRA National Championships at Camp Atterbury this month.
Ten rifles, heaps of cables, huge Doppler Radar unit, military-grade Laser RFs on tripods, spare barrels, safety gear — all ready for action in Texas.
About the Applied Ballistics Mobile Lab
Q: What is the basic purpose of the Applied Ballistics Mobile Lab?
Mitchell Fitzpatrick: The Mobile Lab allows us to effectively carry out ballistics testing in the field and at events. It has most of the capabilities of our normal lab, but on wheels.
Q: What hardware and electronics are carried in the Mobile Lab? What are its capabilities?
Bryan Litz: The Mobile Lab will transport most everything that’s in the main lab including the Doppler radar. This rig is new and we haven’t fully outfitted it yet. The load-outs will be somewhat flexible depending on the venue we are supporting.
The three rifles on the left are Barrett MRADS, $6000-$6154 MSRP, before optics.
NOTE to Readers — Check back at the end of the day. We will have more technical information from Bryan Litz and the Applied Ballistics team…
Berger Bullets has created some impressive solid bullets for Extreme Long Range (ELR) shooting. These ultra-long, lathe-turned solids were unveiled at SHOT Show 2019, and they should reach Berger dealers by Mid-April this year. To test their consistency and develop refined BC numbers, the Applied Ballistics test team has braved cold winter weather to test Berger’s new 379 grain solids. The results have been impressive.
The Applied Ballistics testers have loaded the new Berger solids in an innovative .375-Caliber cartridge called the .375 EnABELR. This is slightly shorter than a .375 CheyTac so it allows the round to mag-feed. The brass is made by Peterson. The testers report: “We’ve been loading and shooting a pile of .375 EnABELR this month. The Berger 379gr Solids are proving to be incredibly consistent. Here’s a 10-shot string for one of our guns, shots number 931-940.”
The .375 EnABELR is achieving impressive velocities — 2990 FPS — with the 379-grainers from a 30″ barrel. The test team states: “We’ve been shooting [a 30″-long] 1:7″ twist which works good, but are going to try some 1:8″ and 1:9″ also”.
The .375 EnABELR Cartridge — Big and Fast
The .375 EnABELR cartridge was designed to offer .375 CheyTac performance in a slightly shorter package: “The problem with the .375 CheyTac is that, when loaded with the highest performance .375 caliber bullets (379-407 gr Berger Solids, and the 400-425 grain Cutting Edge Lazers) the round is not magazine feed-able in any action that’s sized for CheyTac cartridges.
“Knowing the .375 CheyTac produced substantial performance, and that it was just too long for magazine feeding, made it easy to converge on a design for the .375 EnABELR. We just had to make the case short enough to achieve magazine length with the desired bullets, while adding a little more diameter to keep the case capacity similar to the .375 CheyTac. The resulting basic shape is quite similar in proportions to the successful .338 Norma Magnum Cartridge which, interestingly, was selected as the cartridge for General Dynamics Lightweight Medium Machine Gun (LWMMG).”
Brass Source — Purchase the Peterson-made .338 EnABELR and .375 EnABELR brass through the Applied Ballistics WebStore. Price for both .338 EnABELR and .375 EnABELR is $125.00 for 50 cases.
On his Bryan Litz Ballistics Facebook page, Applied Ballistics head honcho Bryan Litz noted:
This approach works reasonably well for the distances encountered in most hunting and target shooting conditions, but breaks down rapidly for long range work. It’s really an archaic approach based on artillery firings conducted in the late 1800s and computational techniques developed before the advent of modern computers.
This approach works reasonably well for the distances encountered in most hunting and target shooting conditions, but breaks down rapidly for long range work. It’s really an archaic approach based on artillery firings conducted in the late 1800s and computational techniques developed before the advent of modern computers.
