New SIG Sauer .300 Blackout Supersonic Elite Performance Ammo

posted on April 7, 2015
** 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. **
300blk_ammo_box1sm.jpg

SIG Sauer, Inc. has announced its new .300 Blackout Supersonic Elite Performance Ammunition match grade center-fire cartridges. This supersonic round features a 125-gr. Sierra Matchking projectile and, like the SIG Sauer 220-gr. subsonic .300 Blackout round, is designed to work optimally in today’s high-performance AR rifles.

The Sierra Matchking projectiles in the .300 Blackout supersonic rounds are renowned for their superior accuracy, flat trajectory and consistent point of impact.  The unique hybrid hollow point bullet design also ensures maximum expansion on point of impact. These cartridges feature match grade brass cases and function with standard .223 Rem./5.56 mm magazines without a reduction in capacity.

“The .300 Blackout is an increasingly popular caliber with target shooters and 3-gun competition shooters, and is also an excellent round for home defense in short barrel rifles, including the SIG MCX and M400,” said Bud Fini, vice president of marketing for SIG Sauer. “Elite military units are also evaluating the .300 Blackout as their primary CQB load. More modern sporting rifle hunters are turning to the .300 Blackout for close-range hunting of mid-sized game, including hogs and deer. We are pleased to now offer our customers both supersonic and subsonic rounds to meet their shooting and hunting needs.”  

All Elite Performance Ammunition is manufactured in the United States by SIG Sauer to the same exacting standards as the company’s premium pistols and rifles.  For more information, visit sigsauer.com/ammunition.

Latest

Springfield Armory SA-35 4"
Springfield Armory SA-35 4"

Review: Springfield Armory SA-35 4"

Springfield Armory has made its SA-35 High Power clone even more appealing to those interested in a compact, concealed-carry pistol with a new 4-inch barreled version of its SA-35.

Legacy Sports International Expands Howa Bolt-Action Rifle Lineup

Japanese-made Howa M1500 rifles continue to be some of the best value-for-the-money bolt-actions on the market, and for 2026, the company is adding two new models, along with a new chambering.

The Armed Citizen® Aug. 17, 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.

Skills Check: The Tabula Rasa Method

Too many shooters step onto the range carrying the emotional residue of every missed shot, every bad stage and every ugly drill from the last six months like a tactical backpack full of disappointment. The Tabula Rasa method is designed to change that relationship.

Canadian Law Enforcement Agencies Select Federal Ammunition

Federal Ammunition will supply the Canadian Department of National Defense and the Royal Canadian Mounted Police with rifle and shotgun ammunition, respectively.

Shooting Surplus: Finding Affordable Mil-Surp Ammo in 2026

Today, the market for mil-surp ammo is vastly different than it was even just a few years ago. If you're a military-surplus collector and shooter, what should you look for in 2026? Here's our guide.

Interests



Get the best of American Rifleman delivered to your inbox.