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

Icarry Duty Holsters 1
Icarry Duty Holsters 1

I Carry: A Look at Today's Latest Duty Holsters

Duty holsters have their place, particularly in law-enforcement and security circles, and they do provide some benefits to civilian users, too.

Political Report | Oregon’s Hunting, Fishing, and Agricultural Gambit Accelerates the End Game

Gun control activists have become increasingly emboldened. The shift from targeting the margins to challenging the mainstream signals nothing is off-limits. Gun bans are being aimed at the most popular firearms in America. Now, even hunting—which survives in countries that ban defensive gun use—is being targeted.

ACGG Creates Doug Turnbull Firearms Restoration Arts Grant

The American Custom Gunmakers Guild Foundation announced the introduction of its new "Doug Turnbull Firearms Restoration Arts Grant," which is an expansion on the foundation's mission to support gunsmithing education in the United States.

The Armed Citizen® July 31, 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.

Review: Smith & Wesson Model 386 Night Guard

Lipsey’s has teamed up with Smith & Wesson to revive a pair of short-lived, but highly sought after, Night Guard revolvers. The L-frame options include the Model 386, a seven-shot design chambered in .357 Mag.

Standing Guard | We Need to Stand Tall Together

In the short time I have been in this position—humbled and honored to be serving you and our cause—I have focused on streamlining our programs and services, refocusing our efforts on our competitions and other events, and committing resources to the many legal and legislative fights we are in to defend and, where necessary, to win back our Second Amendment-protected freedom.

Interests



Get the best of American Rifleman delivered to your inbox.