Skip to main content Skip to main content

Hornady .450 Bushmaster Subsonic Ammo

Hornady .450 Bushmaster Subsonic Ammo

A unique load for the .450 Bushmaster is Hornady’s new Subsonic offering. It’s loaded with the company’s 395-grain Sub-X (Subsonic–eXpanding) bullet that is designed to expand and penetrate but not break up. Hornady says it’s “silent and stealthy.”

The Sub-X load uses a low-flash propellant that won’t hinder low-light vision and that is also quiet (with a suppressor installed on the rifle, it’s even quieter). The Sub-X bullet has a Flex Tip insert to help initiate expansion and longitudinal grooves in the gilding metal jacket.

This fat bullet has an impressive ballistic coefficient of .300 and a sectional density of .276 that aids penetration. The listed factory velocity is 1,050 fps from a 24-inch barrel. Out of the Rock River Arms LAR-15M I used for this report, which has a 16-inch barrel, the round’s average velocity was 1,005 fps. That’s for five rounds measured 10 feet from the gun’s muzzle with an Oehler Model 35P chronograph.

As for accuracy, the load averaged 1.47 inches for three, five-shot groups at 100 yards. That’s about middle of the pack for this carbine. Hornady’s Subsonic .450 Bushmaster load hits 9.5 inches lower than the company’s 250- and 260-grain loads, and it would not cycle the LAR-15M’s action. Hornady notes that functioning with subsonic ammo is totally dependent on the gun’s gas system.

Hornady Subsonic .450 Bushmaster Ammo
NOTES: Accuracy is the average of three, five-shot groups fired from a benchrest. Velocity is the average of five rounds measured 10 feet from the gun’s muzzle. Range temperature was 45 to 64 degrees Fahrenheit.

Hornady’s Subsonic line also includes .300 Blackout, .30-30 Win., and .45-70 Gov’t rifle cartridges and 9mm Luger, .40 S&W, and .45 ACP handgun chamberings.

MSRP: $39.72;

GET THE NEWSLETTER Join the List and Never Miss a Thing.

Recommended Articles

Popular Videos

Surefire XSC Micro-Compact Pistol Light: First Look

Surefire XSC Micro-Compact Pistol Light: First Look

Small, lightweight and purpose-built for sub-compact carry guns, Surefire's XSC pistol light takes on EDC illumination segment.

Trijicon RMRcc Reflex Sight – Perfect for Optics-Ready Concealed-Carry Pistols

Trijicon RMRcc Reflex Sight – Perfect for Optics-Ready Concealed-Carry Pistols

The people asked and Trijicon answered. Introducing the RMRcc miniature red-dot sight for compact, concealed-carry pistols. Trijicon's new RMRcc features the durability and reliable controls that have made the RMR so successful, but its reduced dimensions make the “Concealed Carry” model better suited for the popular small-frame pistols designed for discreet carry and personal defense.

Cameras Don

Cameras Don't Lie: Subsonic 9mm vs. .300 Blackout

In this segment of "Cameras Don't Lie," a subsonic-ammo showdown, 9mm vs. .300 Blackout fired from AR rifles.

See All Videos

Magazine Cover

GET THE MAGAZINE Subscribe & Save

Digital Now Included!


Give a Gift   |   Subscriber Services


Buy Digital Single Issues

Don't miss an issue.
Buy single digital issue for your phone or tablet.

Buy Single Digital Issue on the Shooting Times App

Other Magazines

Special Interest Magazines

See All Special Interest Magazines

GET THE NEWSLETTER Join the List and Never Miss a Thing.

Get the top Shooting Times stories delivered right to your inbox.

Phone Icon

Get Digital Access.

All Shooting Times subscribers now have digital access to their magazine content. This means you have the option to read your magazine on most popular phones and tablets.

To get started, click the link below to visit and learn how to access your digital magazine.

Get Digital Access

Not a Subscriber?
Subscribe Now