FAQs » Ballistics

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Why aren't there more bullets in the Hornady 4DOF database?

Hornady technicians will continue to add Hornady projectiles and other bullet brands to the database. Testing is time-consuming, but rest assured, there will be more projectiles added to the library.

Categorized in: Ballistics, Bullets

Why does load data listed in various manufacturers' loading manuals differ when loading the same cartridge?

The size of the specific firearm chamber, throat dimensions, seating depth, bullet profile, propellant variances and crimping depth can all contribute to variations in load data. The data found in the Hornady loading manual represents actual results derived in the Hornady Ballistics Laboratory. Hornady recommends that reloaders... Continue Reading

Categorized in: Ballistics

What would the velocity of your ammunition be if using a shorter barrel?

Exact velocities can't be calculated because variables associated with individual chambers and/or barrels affect velocity, but on average, velocity gains or losses will be approximately 25 to 35 feet per second per inch of barrel difference. But that hold true for every load or every gun. To truly measure performance, the load should be tested over a chronograph.

Categorized in: Ballistics

Why does velocity differ from what’s listed on the ammo box?

In order to comply with industry standards, Hornady publishes data for ammunition derived from testing with Sporting Arms and Ammunition Manufacturers Institute (SAAMI) specification test barrels. SAAMI specifies minimum and maximum chamber sizes and certain barrel lengths for certain cartridges. For instance, most rifle test barrels are... Continue Reading

Categorized in: Ballistics

Where can I find ballistics information?

Ballistics information for each bullet and cartridge is available on our online store. You'll see a tab called "Ballistics" at the top of each specific product page.

Categorized in: Ballistics