Hornady Frontier .300 AAC Blackout ammunition (part no. FR410) loads a heavy 208-grain full metal jacket bullet specifically at subsonic velocity, built for shooters running a suppressed AR-platform carbine. Hornady builds this under its Frontier range-ammunition line, giving suppressed .300 Blackout shooters real Hornady manufacturing quality without premium hunting-ammo pricing. The heavy 208-grain bullet stays below the speed of sound at typical .300 Blackout barrel lengths, eliminating the supersonic crack a suppressor cannot silence, while the FMJ construction feeds reliably for high-volume range use. Twenty rounds to the box, this is rifle ammunition built specifically for quiet, suppressed shooting.

Key Specifications

• The chambering is .300 AAC Blackout, the standard cartridge for suppressed AR-platform carbines.
• The bullet weighs a heavy 208 grains, the weight class built for subsonic performance.
• This load is loaded specifically as subsonic, staying below the speed of sound.
• Subsonic velocity eliminates the supersonic crack that would otherwise defeat a suppressor’s sound reduction.
• The bullet is a full metal jacket, feeding reliably without expanding through high-volume shooting.
• Cases are brass, running smoothly through AR-platform actions.
• Hornady builds this under its Frontier line, its dedicated range-ammunition brand.
• Hornady packages this load 20 rounds per box, 10 boxes per case, for shooters buying in bulk.
• Cost runs about $1.00 a round, reasonable pricing for a dedicated subsonic load.

Frequently Asked Questions

Is this ammunition confirmed subsonic? Yes, it is loaded specifically as a subsonic .300 Blackout round, not just a heavy bullet that happens to run slow.

Why does subsonic ammunition matter for a suppressor? Staying below the speed of sound removes the supersonic crack a suppressor cannot silence, keeping the shot genuinely quiet.

Is Frontier the same quality as other Hornady ammunition? Yes, Frontier is Hornady’s dedicated range-ammunition line, built to the same manufacturing standards at a more affordable price.

Buy Hornady Frontier .300 Blackout 208gr Subsonic Ammo

A suppressed .300 Blackout build is only as quiet as the ammunition running through it, and this dedicated subsonic load is built for exactly that job. Run it through your can and keep every shot genuinely quiet. Order from our Lubbock, Texas gun shop and it ships fast to your door.