Sig Sauer Marksman Elite 5.56x45mm NATO 77 Grain Sierra MatchKing HP Ammo - 20 Rounds

The Sig Sauer Marksman Elite 5.56x45mm NATO 77 Grain Sierra MatchKing HP ammo is built for shooters who demand match-grade accuracy at distance. Loaded with a 77-grain Sierra MatchKing open-tip match bullet, this 20-round box delivers the consistency and precision you need whether you're dialing in a precision rifle, running a long-range competition stage, or pushing the limits of your AR-platform accuracy. The open-tip match design—favored by competitive shooters for decades—provides superior aerodynamic performance and predictable terminal behavior downrange.

Each round is assembled with the attention to detail that defines Sig Sauer's Marksman Elite line. The 77-grain bullet leaves the muzzle at 2,750 fps with 1,293 ft-lbs of energy, paired with a ballistic coefficient of 0.362 (G1) that supports stable flight and minimal wind deflection in real-world conditions. Brass casings ensure reliable feeding and extraction cycle after cycle, making this ammo at home in picky precision rifles or your go-to AR for group work and load development.

Match-grade rifle ammo is only as good as its consistency, and this load is manufactured to tight tolerances you can count on. Whether you're chasing sub-MOA groups, preparing for a regional PRS match, or simply raising your standard for accuracy, the Marksman Elite 77-grain load offers the velocity stability and bullet quality that separates competitive ammunition from surplus or plinking rounds.

Key Features

• 77-grain Sierra MatchKing open-tip match bullet for superior aerodynamic performance
• Muzzle velocity of 2,750 fps with 1,293 ft-lbs energy for consistent long-range impact
• Ballistic coefficient of 0.362 (G1) reduces wind drift and supports predictable bullet flight
• Brass casings for reliable feeding and reloadability
• Match-grade consistency ideal for precision rifle builds and competitive shooting

Specifications

Frequently Asked Questions

Is Sig Sauer Marksman Elite 77-grain ammo suitable for AR-15 rifles?

Yes. This 5.56x45mm NATO load is designed for standard AR-platform rifles and carbines. It performs well in precision uppers, competition builds, and any rifle chambered in 5.56 NATO.

What makes open-tip match ammunition different from standard hollow-point rounds?

Open-tip match (OTM) bullets are engineered for precision and consistency rather than hunting expansion. The open tip improves aerodynamic stability in flight and helps achieve tighter groups at distance. They are not designed as hunting ammunition and may not perform like traditional hollow-points on game.

Can I reload the brass casings from this ammunition?

The box contains brass casings, which are reloadable. However, inspect each case for damage before reloading and follow your reloading manual for proper setup and procedures.

What is the ballistic coefficient and why does it matter for long-range shooting?

The G1 ballistic coefficient of 0.362 indicates how well the 77-grain bullet resists air drag. A higher BC means flatter trajectory and less wind drift—important factors when stretching shots to distance or shooting in variable wind conditions.