The Hornady Frontier 338 ARC 285 Gr FMJ Subsonic delivers exceptional performance for AR-15 platform rifles and micro-bolt action firearms. This innovative subsonic cartridge features a 285-grain Full Metal Jacket bullet in the advanced 338 ARC caliber providing approximately 1.5 times more energy than 300 Blackout subsonic ammunition while maintaining reliable cycling in semi-automatic platforms.Hornady Frontier 338 ARC 285 Gr FMJ Subsonic ammunition285-grain Full Metal Jacket bullet for consistent performanceSubsonic velocity ideal for suppressed shootingCompatible with AR-15 and micro-bolt action riflesBased on 6.5 Grendel parent case necked up to .338 caliberMilitary-grade construction and reliabilityUses ARC/Grendel magazines with Type 2 bolt faceOriginally developed for the U.S. Department of Defense the 338 ARC cartridge excels in tactical applications medium-sized game hunting and suppressed shooting scenarios. The subsonic design provides ballistic performance comparable to .44 Magnum while offering superior accuracy at extended ranges. Perfect for hunters pursuing deer black bear and feral hogs as well as tactical and law enforcement applications requiring reliable subsonic performance.