The Hornady Black line of ammunition features new bullet and propellant technology specifically created for optimal performance across a variety of shooting applications with supreme accuracy and consistency. Its clean burning propellant technology provides 15 to 20% temperature reduction, resulting in a progressive burn rate with minimal flash. Made in a .450 Bushmaster cartridge and loaded with a 250 grain Hornady FTX projectile, this round is designed to fit, feed and function with direct impingement, gas piston, suppressed, unsuppressed, bolt, supersonic, subsonic, rifle-length, mid-length, carbine, and pistol AR platforms. The FTX projectile with patented Flex Tip bullet technology delivers improved accuracy, flat trajectories, deep penetration, and is safe to shoot in tubular magazines as well as any other firearm.