Hornady 4DOF Ballistics Calculator Now a Free App

by
posted on November 15, 2017
** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. **
hornady_lede.jpg

Since its 2016 introduction as a website version, the state-of-the-art Hornady 4DOF (4 Degrees of Freedom) Ballistic Calculator has become a go-to resource for those seeking more accurate trajectories, especially at extreme ranges. Now the 4DOF is available as a free Ballistic Calculator App, which features the 4DOF as well as a standard BC (ballistic coefficient) calculator.

The calculator provides trajectory solutions based on Doppler radar, making it more accurate for long-range hits than using BC-based systems or custom drag curves based on limited data collection points. The calculator comes pre-populated with certain Hornady bullet files, including ELD-X and ELD Match bullets along with appropriate BTHP bullets. In addition, popular long-range projectiles from other companies like Sierra, Berger and more are included. Users can enter their own G1 or G7 BC, or choose from the entire lineup of Hornady bullets and ammunition in easily filtered pre-populated lists. 

"Current ballistic calculators provide three degrees of freedom in their approach; windage, elevation and range, but treat the projectile as an inanimate lump flying through the air," said Dave Emary, Hornady chief ballistician. "This program incorporates the projectile's movement in the standard 3 degrees but also adds its movement about its center of gravity and subsequent angle relative to its line of flight, which is the fourth degree of freedom."

                                        

The app is available on both the Apple and Android app stores and allows users to calculate trajectories in areas without wireless connectivity.The Hornady Ballistic Calculator App is Bluetooth enabled and will toggle with select wind meters. The App also allows users the ability to create "favorites" (rifle/scope/ammunition combinations) and save them for repeated use.

For more information visit hornady.com

 

 


Latest

Ruger Harrier
Ruger Harrier

Review: Ruger Harrier

Ruger’s new Harrier AR-15-style rifle proves to be a great entry-level, multi-purpose carbine.

New For 2026: Canik Mete MC9 Prime Radian

Building on the company's initial Mete MC9 Prime design, Canik added a Radian Weapons Afterburner compensator and Ramjet barrel to create the new MC9 Prime Radian.

The Armed Citizen® April 6, 2026

Read today's "The Armed Citizen" entry for real stories of law-abiding citizens, past and present, who used their firearms to save lives.

Does AI Pose a Threat to the 2nd Amendment?

Several recent studies highlighted AI's propensity to dispense anti-Second Amendment propaganda, and more alarmingly, AI also seems willing to sacrifice human lives to avoid being taken offline.

I Have This Old Gun: Winchester 1886 Saddle-Ring Carbine

As our country was celebrating its centennial 150 years ago, Oliver Winchester dominated the lever-action market with his Models 1866 and 1873 and was just introducing the Model 1876.

First Look: Gunsmoke Arsenal Tactical Cigar Protection

Looking for a smoke after smoking some targets? The Tactical Cigar Protection case from Gunsmoke Arsenal keeps your stogie secured until you're ready to relax.

Interests



Get the best of American Rifleman delivered to your inbox.