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

CZ 75 Legend 01
CZ 75 Legend 01

The CZ 75 Legend: Rebirth of an Icon

If you make a short list of the most influential handgun designs of the 20th century, the CZ 75 would make the cut. A half century since its introduction, CZ is honoring that legendary status with the CZ 75 Legend.

39 New Rifles for 2026

Today's new rifles run the gamut from the latest and greatest packed with the most up-to-date features money can buy to retro-inspired models that give us a glimpse of the way things used to be if you wanted to send a bullet "over there somewhere."

The Armed Citizen® June 1, 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.

Tactical Belts For The Rest Of Us

Most shooters don’t need a "war belt." While enthusiasts like the idea of preparing for every contingency, the vast majority of us need a reliable platform for a range session, a training class or a local club match.

Review: Trijicon Credo 1-10x28 mm Riflescope

With a 10X magnification range, the Trijicon Credo 1-10x28 mm riflescope is ideal for close-range targets, long-range pursuits and everything in between.

Study Shows Widespread Public Approval for Self-Defense, Recreational Shooting

Research conducted by Responsive Management annually for the Council to Advance Hunting and the Shooting Sports (CAHSS) found that, in 2025, 78 percent of adult residents in the United States believe learning self-defense skills with a firearm is completely acceptable.

Interests



Get the best of American Rifleman delivered to your inbox.