Ammo Specifications
More Information on Sig Sauer 277 Sig Fury Ammo
Introducing the Sig Sauer .277 Fury FMJ Ammunition: a groundbreaking innovation in the world of tactical and precision shooting. Designed with cutting-edge technology and Sig Sauer’s renowned commitment to quality, this ammunition redefines accuracy, energy, and performance for long-range shooting and hunting applications.
Featuring a 135-grain full metal jacket (FMJ) projectile, the Sig Sauer .277 Fury offers unrivaled accuracy and ballistics, ensuring consistent and precise shot placement. The FMJ design provides excellent structural integrity and weight retention, delivering optimum performance and minimal barrel fouling.
Sig Sauer’s unique Hybrid Ammunition Technology combines the best of both worlds: a high-performance stainless steel base for increased pressure and velocity, and a lightweight brass body for consistent feeding and extraction. This revolutionary design allows the .277 Fury to achieve unparalleled performance, making it the ultimate choice for serious shooters and hunters.
SIG Sauer .277 Fury 135 Grain Full Metal Jacket (E277SFB135-20) is a premium centerfire rifle cartridge designed to provide consistent performance for target shooting, training, and recreational range use. Built around the innovative .277 Fury (6.8×51mm) cartridge, this load offers shooters an opportunity to train with the same modern chambering developed during SIG Sauer’s participation in the U.S. Army’s Next Generation Squad Weapon (NGSW) program. By combining a traditional brass case with a high-quality 135-grain FMJ projectile, this ammunition delivers reliable function and excellent accuracy while remaining an economical choice for high-volume shooting.
The .277 Fury cartridge represents a significant advancement in modern rifle cartridge design. Sharing overall dimensions similar to the 7.62×51 NATO/.308 Winchester family, it was engineered to maximize ballistic performance from short-action rifles. While SIG’s hybrid-case military and premium hunting loads are capable of extremely high operating pressures, the 135-grain FMJ training load utilizes a conventional brass case, making it suitable for commercial .277 Fury firearms while still delivering impressive velocity and flat-shooting performance.
At the heart of this cartridge is a 135-grain Full Metal Jacket projectile featuring a lead core enclosed in a copper alloy jacket. The FMJ design promotes smooth feeding, consistent accuracy, and reduced barrel fouling during extended shooting sessions. Because it is a non-expanding projectile, it is intended primarily for target practice, training, and recreational shooting. The bullet closely mirrors the external ballistics of SIG’s premium .277 Fury loads, allowing shooters to build familiarity with the cartridge while using a more economical practice option.
SIG Sauer publishes a muzzle velocity of approximately 2,750 feet per second from a 16-inch barrel, producing approximately 2,265 foot-pounds of muzzle energy. When fired from longer barrels, velocities increase further, contributing to the cartridge’s exceptionally flat trajectory and excellent retained energy. The 135-grain projectile features a G1 ballistic coefficient of approximately 0.488, allowing it to resist wind drift and retain velocity efficiently at extended distances. These characteristics have helped establish the .277 Fury as a modern cartridge capable of outstanding long-range performance from compact rifle platforms.
Each cartridge is assembled using premium reloadable brass cases, reliable Boxer primers, and carefully metered propellant charges to promote consistent ignition and uniform velocities. SIG Sauer’s manufacturing standards emphasize precision and quality control, helping ensure dependable reliability in bolt-action rifles and semi-automatic platforms chambered for .277 Fury. The result is ammunition that offers excellent consistency from lot to lot while maintaining the accuracy expected from a premium rifle cartridge.
Packaged in 10 20-round boxes, the E277SFB135-20 provides an ideal solution for shooters looking to spend more time behind their rifle without relying exclusively on premium hunting or match ammunition. Whether confirming zero, practicing positional shooting, refining long-range fundamentals, or simply enjoying a day at the range, this load offers the dependable performance needed to maximize time on the trigger.
For shooters exploring one of today’s most innovative rifle cartridges, the SIG Sauer .277 Fury 135 Grain FMJ delivers an excellent balance of accuracy, reliability, and value. Combining modern cartridge technology with premium manufacturing and consistent ballistic performance, it serves as an outstanding training companion for anyone shooting the .277 Fury platform.
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