First Look: Sig 300 Blackout 205-Grain Subsonic Hunting Ammo

First Look: Sig 300 Blackout 205-Grain Subsonic Hunting Ammo

Sig 300 Blackout 205-Grain

Designed to feed smooth and hit hard, the new Sig 300 Blackout 205-Grain subsonic tipped hunting ammo aims for elite-level suppressed performance in the field.

As some long ago noted, the .300 Blackout is a dynamite hunting option. Of course, the ammo most turned to to put meat on the table generally did away with the cartridges other admirable quality—suppressibility. Now, Sig Sauer is attempting to mate the two virtues, delicate as it might be, with a new sub-sonic hunting option.

The new Sig 205-grain subsonic 300BLK load is specifically designed for use out of abbreviated barrels generally favored by those who shoot suppressed. At the same tick, they’re topped with a unique bullet, reminiscent of Wilhelm Brenneke's mini-wadcutter design. However, the stepped side isn’t meant to provide a cutting edge—like Brenneke’s bullet—but to ensure smooth feeding through a fully-loaded 30-round magazine. The Sig 205-grain subsonic 300 Blackout has the stuff to stay quiet, moving at 1,000 fps at the muzzle of a 16-inch barreled rifle. It’s a jacketed, lead-core projectile is engineered to reach full expansion at these mild velocities, thanks in part to its polymer tip.

The Sig 205-grain subsonic 300 Blackout ammo is Sig’s third foray into hunting rounds for this caliber. Preceding it were two supersonic 120-grain solid copper options. Present MSRP on the subsonic hunting round is $33.95 for a box of 20.

More From Sig Sauer:

NEWINGTON, N.H. – SIG SAUER, Inc. is pleased to add a 205gr subsonic 300BLK load to its Tipped Hunting line of ammunition.

The new subsonic 300BLK ammunition features a yellow-tipped, 205gr lead-core bullet designed for explosive expansion and exceptional accuracy. This load uses the same high-quality, single-base extruded powders as SIG Match Grade rounds, ensuring consistent muzzle velocity and insensitivity to temperature change.

Optimized for the AR-15 platform, the new subsonic 300BLK Tipped Hunting ammunition is engineered to allow hunters to load 30 rounds in a 30-round magazine and have the cartridges feed properly. This was achieved by SIG SAUER engineers after extensive research and development resulting in a stepped-down bullet design with a shouldered ogive that keeps the bullet from hitting the ridges of the magazine which would cause the rounds to shift and eventually fail to feed.

This load is ideal for use with a suppressor, which greatly reduces sound signature and muzzle flash, making it a favorite among hunters. Muzzle velocity is 1000 fps and muzzle energy is 455 ft-lbs from a 16-inch barrel. This round is recommended for use in barrels 9-inches or longer.

“300BLK continues to be a popular caliber and, in addition to several Match Grade rounds, SIG SAUER now offers two hunting loads – the subsonic 205gr Tipped Hunting and 120gr supersonic Elite Copper Hunting ammunition,” said Brad Criner, Senior Director, Brand Management and Business Development, SIG SAUER Ammunition.

For more information on Sig 300 Blackout 205-Grain Subsonic Hunting Ammo, please visit

On-Target Ammunition Information:


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Elwood Shelton is the Digital Editor for Gun Digest. He lives in Colorado and has provided coverage on a vast spectrum of topics for GD for more than a decade. Before that, he was an award-winning sports and outdoors reporter for a number of newspapers across the Rocky Mountains. His experience has consisted of covering the spread of chronic wasting disease into the Western Slope of Colorado to the state’s ranching for wildlife programs. His passion for shooting began at a young age, fostered on pheasant hunts with his father. Since then, he has become an accomplished handloader, long-range shooter and avid hunter—particularly mule deer and any low-down, dirty varmint that comes into his crosshairs. He is a regular contributor to Gun Digest Magazine and has contributed to various books on guns and shooting, most recently Lever-Actions: A Tribute to the All-American Rifle.



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