Barnes Suppressor Series .308 Winchester — 205gr Subsonic

Barnes Subsonic .308 WIN 205gr Sierra Game King Ammunition - 20 Rounds

Get purpose-built subsonic performance for your suppressed .308 build with Barnes Suppressor Series — engineered specifically for the growing world of suppressor ownership, not standard ammunition slowed down as an afterthought.

This load pairs Barnes' Suppressor Series with the Sierra 205-grain GameKing HPBT bullet, delivering genuine subsonic velocity for noticeably quieter shots through a suppressed .308. Clean-burning propellants are specifically selected to minimize gas blowback and keep your suppressor cleaner over time, and the Sierra GameKing bullet is engineered to expand reliably even at subsonic velocities — solving a common problem where slower bullets fail to expand and deliver inconsistent terminal performance.

Important: this load is not designed to cycle semi-automatic or fully automatic rifle actions. While it can be fired safely in these platforms, the action will not cycle on its own — the bolt must be manually charged after each shot. This is a deliberate characteristic of subsonic ammunition at this pressure level, not a defect, and it's an essential detail to know before running this load in a semi-auto rifle. Barnes has also indicated supersonic variants are planned for the Suppressor Series lineup, broadening the family's performance options over time.

Whether you're running a bolt-action .308 build specifically for suppressed hunting or precision work, or you understand and accept the manual-cycling tradeoff on a semi-auto platform in exchange for genuine subsonic quiet, Barnes Suppressor Series gives you purpose-engineered ammunition rather than a standard load that just happens to be slow.

All ammunition sales are subject to applicable federal, state, and local laws.

Frequently Asked Questions

Q: Will this ammunition cycle a semi-automatic rifle?
A: No, this load is not designed to cycle semi-automatic or fully automatic actions. It can be safely fired in these platforms, but the bolt must be manually charged after each shot.

Q: What caliber and bullet weight is this ammunition?
A: It's .308 Winchester with a 205-grain Sierra GameKing HPBT (hollow point boat tail) bullet.

Q: How many rounds are in each box?
A: Each box contains 20 rounds.

Q: Why use subsonic ammunition instead of a standard load?
A: Subsonic ammunition stays below the speed of sound, eliminating the supersonic crack that a suppressor cannot reduce, resulting in a noticeably quieter shot when paired with a suppressor.

Q: Does this bullet still expand at subsonic velocities?
A: Yes, the Sierra 205gr GameKing is engineered to expand reliably even at reduced subsonic velocities, addressing a common weak point of slower ammunition.

Q: Are supersonic versions of Suppressor Series ammunition available?
A: Barnes has indicated supersonic variants are planned for future release to broaden the Suppressor Series lineup.