The .277 Fury or 6.8×51mm Common Cartridge[5][6] (designated as the .277 SIG Fury by SAAMI) [7] is a centerfire, rimless, bottlenecked rifle cartridge announced by SIG Sauer in late …

Now for the first time, this technology will be available to the U.S. civilian market with the MCX-SPEAR rifle chambered in 6.8x51 along with a family of Hybrid Ammunition from SIG SAUER.

Oct 4, 2023 · In 2022, the U.S. Army finally concluded its search for a new battle rifle, lightweight machine gun, and cartridge, choosing Sig Sauer’s design. The iconic 5.56mm appears to have …

May 17, 2022 · Compare the ballistics of the .277 Sig Fury, 5.56 NATO, and .308 Winchester to find out which one delivers the best performance for your next range day!

Nov 23, 2025 · The US Army’s recent announcement of the adoption of the Sig 6.8X51mm round has created quite a stir in both military and civilian circles. A powerful new round and a couple …

Explore the full ballistic chart for Sig Sauer’s .277 Fury (6.8x51mm) round—designed to outperform 5.56 NATO. Compare velocity, energy, and bullet drop with 6.5 Creedmoor and more.

Oct 30, 2025 · The 6.8 Western was designed for heavy-for-caliber bullets, while the .277 SIG Fury uses more traditional .277 bullet weights. Further, SIG lists velocities for its cartridge out …

Apr 30, 2024 · The Spear XM5 and the SIG Light Machine Gun (XM250) run the recently developed 6.8×51 (277 SIG FURY) hybrid steel/brass ammunition. Before we get into the …

Dec 20, 2025 · The 6.8×51mm Common Cartridge also referred to as the 6.8mm Next Generation Squad Weapon Cartridge, is a new intermediate cartridge designed and developed for the …

Jul 25, 2024 · During the recent SIG NEXT event in New Hampshire SIG announced that they would not only introduce an MCX SPEAR chambered in 6.8×51, but that they are also …