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February 24th, 2023

GeoBallistics Software Acquired by Vortex

Vortex geoballistics software ballistics rangefinder atmospherics long range ballistic table windage elevation

Vortex geoballistics software ballistics rangefinder atmospherics long range ballistic table windage elevationVortex, the large American optics company, has acquired GeoBallistics, a Texas-based business that sells mobile platform ballistics software. The GeoBallistics software is offered for both iOS (Apple) and Android platforms. This software features an advanced 3DOF solver and continuously updated bullet library. GeoBallistics software has other very sophisticated features:

1. Four Operating Modes (HUD, Map, Chart, and Comp).
2. Atmospherics Bluetooth Connectivity with Kestrel and Weatherflow.
3. Map Mode with GPS Rangefinder (use to range targets, create range cards).
4. Rifle Data and Range Cards available and synched via internet cloud servers.

Vortex Will Support Current GeoBallistics Users
For shooters already utilizing the GeoBallistics software, nothing in the software and App experience will change. And Vortex will now provide customer service and support. To learn more about GeoBallistics Apps, visit GeoBallistics.com.

Vortex plans to add GeoBallistics products to the Vortex portfolio to continue “to enhance and simplify hunting and shooting while providing critical information quickly and accurately.”

“We’re always looking for new ways to help Vortex Nation enjoy unforgettable experiences in the field”, said Joe Hamilton, Vortex CEO. “Acquiring GeoBallistics means we can offer both consistency in our product line and make long-range ballistics simpler and more accessible for everyone.”

Vortex geoballistics software ballistics rangefinder atmospherics long range ballistic table windage elevation
Vortex geoballistics software ballistics rangefinder atmospherics long range ballistic table windage elevation

How to Use GeoBallistics App — Informative Video

In this video, Clay Hergert, owner of ATX Precision (and former SEAL Team Sniper) demonstrates the GeoBallistics App with BallisticsARC capabilities. Clay shows how to use BallisticsARC to create rifle profiles.


This article Copyright 2023 AccurateShooter.com. No reproduction on any other website is authorized.

Permalink - Videos, News, Optics, Tech Tip No Comments »
February 24th, 2023

Dad Develops .223 Rem F-TR Load for his Daughter

F-TR load development .223 Rem Remington Sierra TMK

Just last week hundreds of F-Class shooters competed at the Southwest Nationals in Phoenix, Arizona. The vast majority of F-TR shooters had rifles chambered for the .308 Winchester cartridge (7.62×51), but F-TR rules also allow the .223 Rem (5.56×45). There are some advantages to the smaller .223 Rem round — there’s notably less recoil, bullets and brass are significantly cheaper, and a lot less powder is required. For those who are considering campaigning a .223 Rem F-TR rifle, this story explains how an accurate .223 Rem load was developed. This load development was done by a father for his daughter who was getting started in F-Class competition.

Dad builds an F-TR Rifle for his Daughter and Develops Load

Jeremy Rowland decided to put together an F-TR rifle for his eldest daughter, who enjoys competitive shooting. For his daughter, Rowland chose the .223 Rem option because it has less recoil and components are less costly than the .308 Win. Here is Rowland’s account of how he developed a .223 Rem load. For more details (with data charts), read Jeremy’s FULL STORY on Sierra Bullets Blog.

Journey to Find a .223 Rem F-Class Load

by Jeremy Rowland, Reloading Podcast
My oldest daughter has been to several matches with me, and has even competed in several, using her .243. [A few seasons back] I decided, she would compete with a .223 Rem in F-TR. Looking for a good starter rifle, I settled on the Savage Axis Heavy Barrel since it has a 1:9″ twist. This would be a great little rifle for her to learn on. The rifle was shot unmodified, as it came from the factory. A Sinclair F-Class Bipod w/micro elevation adjustment was fitted to the front.

Next came finding the components I wanted to use for her match loads. After spending hours and hours running numbers on JBM stability calculator as well as in my iPhone Ballistic AE app, the 69 gr Sierra Tipped MatchKing® (TMK) looked really good. So that’s what I decided to go with. I jumped in head first and ordered a bulk pack of the Sierra 69 gr TMKs. I had settled on Hodgdon CFE 223 powder since it shows good velocity. I decided to go with once-fired Lake City brass with CCI BR4 primers.

Next came the testing. I decided to run a ladder test (one shot per charge from min to max looking for the accuracy node). The ladder test ranged from 23.5 grains to 25.6 grains, in 0.3 grain increments.

F-TR load development .223 Rem Remington Sierra TMK

Ladder Test Conditions: Temp: 59.4° | Humidity: 63% | Elevation: 486 | Wind: 5-12 mph

F-TR load development .223 Rem Remington Sierra TMK

Bullet: 69 gr Sierra Tipped MatchKing®
Case: Lake City (mixed years, sorted by case capacity)
Primer:CCI BR4
Powder: Hodgdon CFE 223 (one round each from 23.5 to 25.6 grains)
Cartridge OAL: 2.378″
Base to Ogive: 1.933″ (.020″ off lands)

After his ladder test, Rowland settled on a load of 25.2 grains of Hodgdon CFE 223. He then fine-tuned his load with different seating depths: “I loaded up 5 rounds each at .020″ off lands, .015″ off lands, .010″ off lands, and .005″ off the lands. Here are the results from the best group for OAL/Ogive fine tuning. As you can see, I think I’ve found a winner in these 69 gr Sierra Tipped MatchKings.”

F-TR load development .223 Rem Remington Sierra TMK

Seating Depth Test Conditions: Temp: 36.3° | Humidity: 73.8% | Elevation: 486 | Wind: 5-7 mph

This article originally appeared in the Sierra Bullets Blog.

Permalink Bullets, Brass, Ammo, Competition, Reloading, Tech Tip No Comments »