Barnes Suppressor Series .308 Winchester 205-grain Sierra GameKing ammunition (part no. SUP3081) is a purpose-built subsonic load from Barnes, optimized specifically for suppressed rifles. The line uses clean-burning propellants to keep a suppressor’s baffles cleaner and deliver noticeably quieter shots than a standard subsonic handload might, while the heavy 205-grain Sierra GameKing bullet is engineered to expand reliably even at the reduced velocities subsonic loads run at. This is a load built for bolt-action rifles: it will not reliably cycle a semi-automatic or fully automatic action, so the bolt must be manually operated after every shot. It’s a strong choice for suppressed hunting or precision work where noise reduction matters as much as terminal performance.

Key Specifications

• Chambered in .308 Winchester, loaded specifically to subsonic velocity for suppressor use.
• Loaded with a heavy 205-grain Sierra GameKing bullet, sized to stay subsonic while carrying energy downrange.
• The GameKing bullet is engineered to expand even at subsonic velocities, adding dependable terminal performance most subsonic loads lack.
• Loaded with clean-burning propellants specifically chosen to keep a suppressor’s baffles cleaner over extended use.
• Delivers a noticeably quieter shot through a suppressor-ready firearm than a standard subsonic handload.
• Will not reliably cycle semi-automatic or fully automatic actions — the bolt must be manually operated after each shot.
• Brass-cased for reliable function and reloading.
• Packaged 20 rounds to a box.
• Ships at approximately 1.2 pounds per box.

Frequently Asked Questions

Will this ammunition cycle a semi-automatic rifle? No, Barnes specifically notes this subsonic load will not reliably cycle semi-automatic or fully automatic actions; the bolt must be manually charged after each shot even though it can be fired safely in those platforms.

Does the bullet expand at subsonic speed? Yes, the 205-grain Sierra GameKing is engineered to expand even at the reduced velocities subsonic loads run at, unlike many subsonic bullets.

Why does this load use clean-burning propellant? It’s chosen specifically to keep a suppressor’s baffles cleaner over extended use.

Buy the Barnes Suppressor Series .308 Win Subsonic Ammo

A suppressed .308 bolt gun deserves a load engineered specifically for quiet, reliable performance, and this Suppressor Series round delivers it. Add it to your rifle ammunition before your next hunt. Order from our Lubbock, Texas gun shop and it ships fast to your door.