Barnes Suppressor Series .308 Win 205gr Sierra GK HPBT Expanding 20rd

The Barnes Suppressor Series .308 Win 205gr Sierra GK is the solution for shooters who want the stealth of a subsonic round without sacrificing the impact of a hunting load. Standard subsonic .308 rounds often fail to expand, acting more like a target "pencil" than a hunting bullet. This load changes the game—it’s purpose-built to deliver whisper-quiet performance and a massive terminal punch, making it the premier choice for low-signature hunting and precision bolt-action shooting.

The fatal flaw of most subsonic .30-caliber ammo is that heavy bullets are designed to mushroom at 2,000+ fps. At subsonic speeds, they simply don't open up. Barnes fixed this by utilizing a specialized 205-grain Sierra GameKing HPBT. Featuring a thinner jacket and a custom lead-alloy core, this bullet is "tuned" to expand at impact speeds as low as 900 fps. You get the legendary match-grade accuracy Sierra is known for, combined with the lethal expansion required for an ethical harvest—all while remaining completely subsonic.

In the field, success is measured by silence and stability. Traveling at 1,060 fps, this heavy-hitting 205-grain projectile eliminates the "sonic crack," while its high ballistic coefficient (G1: 0.480) keeps your flight path stable and your energy on target. Built with premium brass and consistent Boxer primers, this load offers the reloadability and ignition reliability you expect from Barnes. It delivers a controlled, quiet shot that hits with the authority needed to get the job done.

Features

• 205-Grain Heavy Projectile: Increased mass at subsonic velocities translates to improved momentum and deeper penetration at low speeds.
• Sierra GameKing HPBT Design: Specialized thin jacket and soft lead core are engineered to ensure reliable terminal expansion at ~900–1,060 fps.
• High G1 Ballistic Coefficient (0.480): Streamlined boat tail profile provides enhanced flight stability and match-grade accuracy at extended subsonic ranges.
• Optimized Subsonic Velocity: 1,060 fps muzzle velocity provides a drastically reduced acoustic signature without sacrificing lethal terminal performance.

Technical Specifications

• Ballistics: .308 Winchester | 1,060 fps (Subsonic) | 512 ft-lbs (Muzzle)
• Projectile: 205 Grain | Sierra GameKing HPBT Expanding | Jacketed Lead-Alloy Core
• Cycling: Reloadable Brass | Boxer Primed | Bolt-Action Optimized (Manual Cycle in Semi-Auto)
• Logistics: 20 Rounds per Box | Commercial Cardboard | Suppressor Series Optimized
• Dimensions: 5.9" x 2.8" x 1.4" (~23.1 cu. in.) | Approx. 1.22 lbs | 32531
• Application: Suppressed Hunting | Stealth Varmint Control | Bolt-Action Precision Shooting
• Country of Origin: USA

Action Compatibility Note: Due to lower gas pressures inherent in subsonic loads, this ammunition will not generate enough energy to cycle the bolt on semi-automatic platforms (AR-10, M1A, etc.). It is designed for Bolt-Action rifles; semi-auto shooters must manually cycle the action after each shot.

When subsonic performance has to deliver both discretion and terminal reliability, this is the load that closes the gap. Trust SMKW to supply purpose-built ammunition that meets real-world performance demands without compromise.