April 30th, 2018

RDF Bullets from Nosler — High BCs and Uniform Meplats

Nosler RDF reduced drag factor match bullets PRS High BC uniform meplats

Nosler’s line of RDF™ (Reduced Drag Factor) bullets feature very high Ballistic Coefficients, hybrid-type ogives, and tight, factory-closed meplats. Nosler’s RDF bullets were designed to be very competitive match projectiles for their respective bullet weights. Now offered in four calibers, Nosler RDF bullets genuinely deliver excellent performance for the price. Shooters, particular PRS competitors, have found the RDFs deliver the flat trajectory and high BC necessary to reach the podium.

Nosler RDF reduced drag factor match bullets PRS High BC uniform meplats

Nosler is proud of its RDF bullets, which feature tight, uniform meplats: “Nosler knows what gives competitive shooters an edge, isn’t an edge at all. It’s a point. With the highest in-class Ballistic Coefficient and smallest, most consistent meplat, RDF is the flattest-shooting match bullet in its class. Now available in more calibers and weights, the RDF’s meticulously-optimized compound ogive and long, drag-reducing boat-tail make achieving peak accuracy a snap”.

Experience RDF, the Flattest-Shooting Match Bullet:

Current Nosler RDF Bullets:
• 22 Cal 70 grain — G1 Ballistic Coefficient 0.416 | G7 Ballistic Coefficient 0.211
• 22 Cal 85 grain — G1 Ballistic Coefficient 0.498 | G7 Ballistic Coefficient N/A
• 6mm 105 grain — G1 Ballistic Coefficient 0.571 | G7 Ballistic Coefficient 0.280
• 6.5mm 140 grain — G1 Ballistic Coefficient 0.658 | G7 Ballistic Coefficient 0.330
• 30 Cal 175 grain — G1 Ballistic Coefficient 0.536 | G7 Ballistic Coefficient 0.270

RDF bullets are also available in Nosler factory ammunition in a variety of popular cartridge types. Nosler factory ammo lets you spend more time at the range and less at your reloading bench. Look for RDF bullets loaded in Nosler’s “Match Grade” Ammunition. Below is the .264-caliber, 140 grain RDF loaded in 6.5 Creedmoor, a popular chambering for PRS and tactical shooters.

Nosler RDF reduced drag factor match bullets PRS High BC uniform meplats

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September 25th, 2017

Access FREE Tech Articles from Applied Ballistics

Want to improve your understanding of Ballistics, Bullet Design, and other shooting-related tech topics? Well here’s a treasure trove of gun expertise. Applied Ballistics offers three dozen FREE tech articles on its website. Curious about Coriolis? — You’ll find answers. Want to understand the difference between G1 and G7 BC? — There’s an article about that.

“Doc” Beech, technical support specialist at Applied Ballistics says these articles can help shooters working with ballistics programs: “One of the biggest issues I have seen is the misunderstanding… about a bullet’s ballistic coefficient (BC) and what it really means. Several papers on ballistic coefficient are available for shooters to review on the website.”

Credit Shooting Sports USA Editor John Parker for finding this great resource. John writes: “Our friends at Applied Ballistics have a real gold mine of articles on the science of accurate shooting on their website. This is a fantastic source for precision shooting information[.] Topics presented are wide-ranging — from ballistic coefficients to bullet analysis.”

READ All Applied Ballistics Articles HERE »

Here are six (6) of our favorite Applied Ballistics articles, available for FREE as PDF files. There are 31 more, all available on the Applied Ballistics Articles Webpage.

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August 19th, 2016

New Hornady Ballistics Calculator Uses Doppler Radar Bullet Data

Hornady Ballistics Calculator 4DOF Doppler Vertical Jump Spin Drift Angle of Attack

Here’s a significant new addition to our knowledge base for Long-Range shooting. Hornady has released a new Ballistics Calculator that employs bullet profiles derived from Doppler radar testing and 3D projectile modeling. Hornady’s Patent Pending 4DOF™ Ballistic Calculator provides trajectory solutions based on projectile Drag Coefficient (not static G1/G7 ballistic coefficients) along with the exact physical modeling of projectiles and their mass and aerodynamic properties. This new 4DOF (Four Degrees of Freedom) calculator also accounts for spin drift and the subtle VERTICAL effects of crosswinds.


We strongly recommend you watch this video from start to finish. In greater detail than is possible here, this video explains how the 4DOF System works, and why it is more sophisticated than other commercially-offered Ballistics calculators. There’s a LOT going on here…

Aerodynamic Jump from Crosswind Calculated
According to Hornady, the 4DOF Ballistics Calculator “is the first publicly-available program that will correctly calculate the vertical shift a bullet experiences as it encounters a crosswind.” This effect is called aerodynamic jump. The use of radar-derived drag profiles, correct projectile dynamics, aerodynamic jump, and spin drift enable the Hornady® 4DOF™ ballistic calculator to provide very sophisticated solutions. Hornady says its 4DOF solver is “the most accurate commercially available trajectory program … even at extreme ranges.”

“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 three 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 means the 4DOF™ calculator should provicde more precise long range solutions than calulators that rely on simple BC numbers or drag curves based with limited data collection points. Emary adds: “The Hornady 4DOF also accurately calculates angled shots by accounting for important conditions that [other ballistic] programs overlook.”

“This calculator doesn’t utilize BCs (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?” That makes sense, but users must remember that Hornady’s 4DOF projectile “library” includes mostly Hornady-made bullets. However, in addition to Hornady bullets, the 4DOF Calculator currently does list seven Berger projectiles, six Sierra projectiles, and one Lapua bullet type. For example, Sierra’s new 183gr 7mm MatchKing is listed, as is Berger’s 105gr 6mm Hybrid.

This Video Explains How to Use Hornady’s New 4DOF Ballistics Calculator

Hornady Ballistics Calculator 4DOF Doppler Vertical Jump Spin Drift Angle of Attack

Using the 4DOF™ Ballistic Calculator:
The Hornady 4DOF Ballistic Calculator provides trajectory solutions based on projectile Drag Coefficient (not ballistic coefficients) along with exact physical modeling of the projectile and its mass and aerodynamic properties. Additionally, it calculates the vertical shift a bullet experiences as it encounters a crosswind, i.e. “aerodynamic jump”. The use of drag coefficients, projectile dynamics, aerodynamic jump, and spin drift enable the 4DOF Ballistic Calculator to accurately measure trajectories even at extreme ranges. It is ideal for both long range and moderate distances and is available for the low-drag precision bullets listed in the drop down menu of the calculator. For calculating trajectories of traditional hunting and varmint bullets using BCs (ballistic coefficients), you can use Hornady’s Standard Ballistics Calculator.

Hornady Ballistics Calculator 4DOF Doppler Vertical Jump Spin Drift Angle of Attack

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