Hornady Announces Patent Pending 4DOF Ballistic Calculator

by
posted on August 18, 2016
hornady_ballistic_calc_logo_f.jpg

Hornady has announced the launch of its new, patent pending Hornady 4DOF (Four Degrees of Freedom) Ballistic Calculator.

The 4DOF calculator provides trajectory solutions based on projectile drag coefficient (rather than ballistic coefficient) along with the exact physical modeling of the projectile and its mass and aerodynamic properties. It will be the first publicly available program that will correctly calculate the vertical shift a bullet experiences as it encounters a crosswind, referred to as aerodynamic jump.

"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."

Using Doppler radar, Hornady engineers have calculated exact drag versus velocity curves for each bullet in the 4DOF calculator library.

"This calculator doesn't utilize BC's (Ballistic Coefficients) like other calculators," added Jayden Quinlan, Hornady Ballistics Engineer. "Why compare the flight of your bullet to a standard G1 or G7 projectile when you can use your own projectile as the standard?"

The 4DOF Ballistic Calculator is available for free. It can be found here.

For more information, go to Hornady.com.

Latest

AR Platform Rifles Becoming More Common Afield Lead
AR Platform Rifles Becoming More Common Afield Lead

AR-Platform Rifles Becoming More Common Afield

Forty-one percent of surveyed hunters used an AR-platform rifle at some time for hunting, according to the findings of research conducted by Responsive Management for the Outdoor Stewards of Conservation Foundation.   

#SundayGunday: Taurus Expedition

This week, we’re taking a closer look at the Taurus Expedition, the company’s first-ever bolt-action rifle.

Tips for Moving Your Stand During Deer Season

Hunt long enough and you’ll encounter the need to move a deer stand during the season. Here are some tips for the best ways to do so.

Behind the Bullet: .300 Savage

Having celebrated its 100th birthday in 2020, the .300 Savage remains a sound choice as a big-game cartridge—especially in the woods of the Eastern United States.

The Good, the Bad and the Ugly of Hunting Public-Land Bucks

Perhaps the best thing a hunter can do to up their odds on public land is to cover a trail a buck uses to get to his bed at daylight. Look closely to find it, because you can be sure it won’t be covered in sign.

Ducks Unlimited to Rejuvenate Nesting Habitat in Nebraska

The U.S. Fish and Wildlife Service (USFWS) awarded grants to Ducks Unlimited (DU) for three projects in the Great Plains, including $6 million to endeavors in the heart of Nebraska’s prairie wetlands.

Interests



Get the best of American Hunter delivered to your inbox.