Frontier .300 AAC Blackout rifle ammunition (brand part no. FR400C) loads a 125-grain full metal jacket bullet at 2175 fps, combining Lake City’s military production capability with Hornady bullets for a mil-spec-grade round at a competitive price. Frontier Cartridge is American-made and built around brass cartridge cases with military-grade boxer primers and propellant, giving shooters a reloadable, reliable round backed by state-of-the-industry quality control. It’s configured for a wide range of uses, from target and match shooting to varmint hunting and personal defense, rather than any single narrow application. For .300 Blackout shooters who want a mil-spec-grade round without the mil-spec price, this rifle ammunition from Hornady is built for exactly that.

Key Specifications

• The chambering is .300 AAC Blackout, a versatile carbine cartridge for both practice and defensive use.
• The bullet weighs 125 grains, a lighter, faster supersonic .300 Blackout option.
• The bullet is a full metal jacket (FMJ), built for reliable feeding rather than expansion.
• Muzzle velocity is rated at 2175 fps.
• Cases are brass with military-grade boxer primers, giving reloadable, reliable ignition.
• Production combines Lake City manufacturing capacity with Hornady bullets, a mil-spec-grade pairing.
• This listing ships as a case of ten 20-round boxes, 200 rounds total.

Frequently Asked Questions

What makes Frontier different from standard ammunition? Frontier pairs Lake City’s military production capacity with Hornady bullets, brass cases, and boxer primers for a mil-spec-grade, reloadable round at a competitive price.

What is this ammunition suited for? Target and match shooting, varmint hunting, and personal defense, a versatile FMJ load across common use cases.

Buy the Frontier .300 AAC Blackout 125gr FMJ Rifle Ammunition

Military-grade components at a civilian price point make Frontier a straightforward choice for .300 Blackout shooters who put volume through their guns. Order it from our Lubbock, Texas gun shop for fast shipping straight to your door.