Hornady Frontier 300 Blackout 208GR FMJ Subsonic FR410

Hornady’s Frontier 300 Blackout 208GR FMJ Subsonic is built for shooters who demand quiet consistency and dependable function every time the bolt closes. Loaded to subsonic velocities with a heavy 208‑grain full metal jacket bullet, these rounds are optimized for suppressed platforms and situations where reduced report and reliable feeding matter. Frontier uses state‑of‑the‑industry loading methods and strict quality control so each cartridge meets the same standards — no surprises, just predictable performance round after round.

The 208‑grain FMJ profile feeds smoothly and resists deformation during handling and cycling, which makes it a natural fit for semi‑autos and bolt guns alike. While subsonic by design, this loading still offers the momentum and sectional density you want from a heavy .30 bullet, helping it retain stability and penetration at practical ranges. Because it’s loaded to subsonic speeds, you get the dual advantage of reduced perceived noise when used with a suppressor and less muzzle blast in close quarters — both important for range comfort and controlled training sessions.

Frontier doesn’t cut corners on components. Each cartridge is built on brass cases that give you reliable chambering, consistent extraction, and the option for reloading if you choose. Military‑grade boxer primers and carefully matched propellant contribute to uniform ignition and velocity spread control, reducing the shot‑to‑shot variance that can undermine accuracy and function. Hornady’s manufacturing tolerances mean the cases are concentric, the bullets are seated squarely, and overall dimensions stay within tight limits — features that show up as smooth magazines, clean chambers, and fewer feeding issues.

These rounds are versatile. They’re engineered for suppressed practice, precision drills, and training where controllable report and reliable feeding are priorities. They’re also a practical baseline load for testing cycling behavior and sighting suppressed firearms because they reproduce consistently shot after shot. Frontier’s quality control means you can load a magazine and expect the same trajectory and function on every draw, which simplifies both training and troubleshooting.

If you want dependable, purpose‑built subsonic ammunition from a respected manufacturer, the Frontier 300 Blackout 208GR FMJ gives you a sensible mix of durability, component quality, and manufacturing consistency. It’s straightforward ammo — no flash, no fuss — made to perform under repeated use and to make suppressed shooting more predictable and comfortable. Box count 20. 

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