Sig Sauer Marksman Elite 300 AAC Blackout 125 Grain OTM Ammunition

The Sig Sauer Marksman Elite 300 AAC Blackout 125 Grain OTM ammunition is purpose-built for shooters who demand match-grade precision in the short-range, high-power subsonic rifle round. Whether you're running a suppressed bolt gun, an AR pistol, or a short-barreled rifle at distance, this load pairs a Sierra MatchKing open-tip match projectile with meticulous hand-loading discipline to deliver tight groups and minimal shot-to-shot variation.

Sig Sauer's Marksman Elite line reflects serious ammunition engineering: each round is precision-loaded under electromechanical monitoring to ensure geometric conformity and consistent performance. The OTM (Open Tip Match) bullet design—the same profile trusted by long-range competitors—provides the aerodynamic stability and predictable ballistics you need when suppressor-equipped, where subsonic performance and accuracy are inseparable. The 125-grain bullet weight is the sweet spot for 300 Blackout, balancing subsonic velocity with downrange energy and minimal wind drift.

Brass cases and consistent loading standards mean you'll get reloadable components back and reliable brass life cycle. At the range or in the field, when you need subsonic 300 Blackout that groups tight and runs clean through a suppressor, Marksman Elite delivers the precision ammunition serious shooters expect.

Key Features

• Sierra MatchKing OTM bullet for superior accuracy and minimal dispersion
• Precision-loaded with electromechanical monitoring for geometric conformity
• 125-grain projectile optimized for subsonic 300 Blackout performance
• Brass cases for reloadability and durability
• Match-grade ammunition engineered for suppressed rifle systems

Specifications

Frequently Asked Questions

Is this ammunition subsonic?

Yes. The Marksman Elite 300 Blackout is specifically designed as a subsonic load, making it ideal for suppressed rifles where you want to stay below the sound barrier for the quietest possible report.

Will this work in my 300 Blackout rifle or AR?

This ammunition is loaded for 300 AAC Blackout, so it will chamber and fire in any rifle or short-barreled platform chambered in that caliber. Always verify your firearm's caliber marking before loading.

Can I reload these cases?

Yes. The brass cases are reloadable, so you can reload and reuse them for additional shooting.

What makes this a match-grade round?

Sig Sauer uses Sierra MatchKing projectiles and electromechanical monitoring during loading to ensure each round meets strict geometric tolerances and consistency standards, resulting in tighter groups and more predictable performance downrange.