Sierra Ammunition Expands GameChanger with the Addition of .300 AAC Blackout and .223 Remington

SEDALIA, Mo. (January 21, 2020) – Sierra® Ammunition introduces two new cartridges in the premium GameChanger™ line up. The new .300 AAC Blackout and .223 Rem. offerings blend match-grade accuracy and deadly terminal performance for the shot of a lifetime.  

The GameChanger line is the result of more than 70 years of designing world-class bullets. Each GameChanger round utilizes a Sierra Tipped GameKing® bullet providing initial expansion to a very heavily constructed hunting bullet plus long-range velocity and energy retention.

The .300 AAC Blackout features a 125-grain Tipped GameKing bullet configured on a 7.62x35mm casing and is a solid choice for hunting coyotes, hogs and deer. The new .223 Rem. cartridge delivers a perfect round for hunting varmint and deer.

New GameChanger Ammunition

CaliberBullet WeightBullet TypeCatalog #Muzzle Velocity fps
.300 AAC Blackout 125 grainTipped GameKing A4625–102115 
.223 Rem.64 grainTipped GameKing A4062–093015

Hunting takes patience, persistence and sacrifice. Sierra gives hunters the confidence to make the shot, knowing it will deliver a potent payload downrange for quick, clean shots every time.

About Sierra Bullets:

Since 1947, Sierra® Bullets has been dedicated to manufacturing the most accurate bullets in the world. Today, Sierra makes hunting and target bullets for rifles and handguns, and has recently expanded into loaded ammunition. To find out more about Sierra Bullets, visit