Range Report: Sig Cross 277 Fury

Sig Sauer's Cross 277 SIG Fury is a lightweight, highly accurate bolt-action rifle that's equally at home on the range and in the deer woods.

August 12, 2025 By Todd Burgreen

Little about the Sig Sauer Cross bolt-action rifle is classic in form. Indeed, not a lick of wood or blued metal can be found on the gun. However, after extensive range testing and in-the-field use, I’m confident even my late grandfather would appreciate what the Cross offers hunters.

While not a typical bolt-action hunting rifle, the Cross offers undeniable capability. If you enjoy lightweight rifles that get on target quickly, feature a sub-4-pound match trigger, a fully adjustable folding buttstock and a threaded barrel, and are chambered in a round that punches above its weight, you’d be wise to consider the Sig Cross.

THE CHAMBERING

With personal defense, law enforcement and military-centric products such an integral part of Sig’s business model, many were surprised when the bolt-action Cross, a blend of hunting and precision rifles, was introduced in 2020. To date, the Cross lineup consists of eight different models—the original Cross, Cross Trax, Cross STX, Cross-PRS, Cross Magnum, Cross Sawtooth Short Action, Cross-Magnum Sawtooth and the Cross 277 Sig Fury. With the latter, the caliber designation is just as much a part of the story as the rifle.

While the .277 Fury chambering was part of the original Cross introduction 5 years ago, it took the recent formalization of a military contract involving the Sig XM7 (MCX-SPEAR) and XM250, each chambered in 6.8x51 mm (aka .277 Fury), to provide the final impetus needed to bring the cartridge to fruition. Basically, the civilian introduction of the .277 Fury suddenly became economically feasible from a production standpoint.

Attention needs to be paid to the terminology Sig uses with the .277 Fury ammunition. Certain loads are tagged with a “hybrid” label that is an indicator of higher pressures. The .277 Fury Hybrid loads use a three-piece case design, along with a proprietary blend of fast-burning powders. The hybrid case utilizes a stainless-steel cartridge head connected to the main brass body via an aluminum locking washer. With steel being much stronger than brass, it tames the higher pressures.

An interesting side benefit of the hybrid case is a lower weight compared to a typical brass case. This may not be a big deal for hunters, but it’s appreciated by soldiers whose loadouts include hundreds of rounds of ammunition. Sig also offers more traditional all-brass .277 Fury ammunition. This ammo is not loaded to the same 80,000 psi pressures of the Hybrid loads and is less expensive.

What does this all mean, and how do we as hunters benefit? In short, a 150-grain AccuBond bullet from a .277 Fury Hybrid Hunter load can travel downrange at more than 2,800 fps when fired from a 16-inch barrel. This outperforms other cartridges, even those traveling down barrels whose lengths start with a “2,” translating into a flatter trajectory and enhanced terminal potency when the bullet strikes an animal.

BUILT FOR SPEED

From the beginning, Sig Sauer designed the Cross bolt-action platform with its high-pressure .277 Fury Hybrid ammunition in mind, and the rifle features both an incredibly rigid action and a machined (not cast) monolithic receiver that eliminates the need for bedding and action screws. The one-piece receiver interacts directly with the two-stage match trigger, bolt, AICS magazine and barrel mounting (think AR, but without upper and lower distinctions).

The Cross design offers a rock-solid backbone conducive to incredible accuracy. Its receiver is more in-line with the barrel (versus sitting under it), thus minimizing barrel harmonics (aka “whip”). The Cross 277 Fury features bore/groove rifling dimensions with tight tolerances, minimum headspace and a trued chamber, thereby minimizing many of the accuracy-robbing causes associated with classic bolt guns. A folding, multi-adjustable buttstock is attached to the rear of the receiver.

Its adjustable folding stock and lightweight design make the Cross 277 SIG Fury a capable rifle for many hunting applications. (Photo courtesy of Sig Sauer)

One overarching theme of the Cross 277 Fury is minimizing weight to maximize user efficiency (after all, you carry a rifle a lot more than you shoot it), and the one-piece receiver aids in this regard. The Sig Cross 277 Fury, with its 20-inch threaded barrel, weighs only 7.1 pounds.

Meanwhile, a full-diameter bolt body makes the Cross 277 Fury smooth to operate. It feeds from standard AICS-pattern magazines, and a Magpul 5-rounder arrives with the rifle.

For testing, a Sig Tango-DMR 3–18x44 mm optic was mounted to the Cross’s integral 20-MOA Picatinny rail. Bench work consisted of accuracy testing and chronographing, and the accuracy testing left me shaking my head—in a good way. The 155-grain Hybrid Match and 150-grain Hybrid Hunter loads both performed closer to 1/2 MOA than 1 MOA.

Numerous positive qualities of the Sig Cross quickly became apparent. I have always been a fan of detachable magazines for safely and efficiently loading and unloading a rifle. Every time in or out of a vehicle or blind, which can happen multiple times a day, requires weapon manipulation that a detachable magazine simplifies. The AR-like safety found on the Cross is easily accessed given the ergonomics of the rifle’s pistol grip.

My deer hunting frequently takes place from blinds and tree stands with expected shots between 100 and 225 yards, though one of the more open fields on the property offers visibility out to 700-plus yards. This is not in the least bit intimidating to the Cross 277 Sig Fury.

Still-hunting is where the rifle came into its own, with the pistol grip making one-handed carry more feasible than with a traditional-style rifle grip. The highly adjustable buttstock makes the Cross conducive to quick, well-placed shots when an animal presents itself.

A svelte, short-action bolt gun chambered in a round boasting magnum-like ballistics is hard to argue with. Thick, tangled cover? No problem. Reach out and touch something on the other side of the field? No problem. The Sig Sauer Cross 277 Fury is up to the challenge.

SPECIFICATIONS: Sig Sauer Cross 277 Sig Fury

Type: Bolt-action centerfire rifle
Caliber: .277 Sig Fury (6.8x51 mm)
Barrel: 20 in.; threaded; cold hammer-forged steel; 1:10 twist
Trigger: 2-stage adjustable match (2.5 to 4 lb.)
Safety: Ambidextrous AR-style
Magazine: Detachable AICS (5-round Magpul magazine included)
Sights: None; 20-MOA Picatinny rail
Stock: Folding precision adjustable
Metal Finish: Black anodized
Overall Length: 38.5–40.5 in.
Weight: 7.1 lb.
MSRP: $1,975

ACCURACY RESULTS: Sig Sauer Cross 277 Sig Fury

Sig Fury Hybrid Hunter

Bullet Weight: 150 gr.
Muzzle Velocity: 2,864 fps
Average Group: .687 in.

Sig Fury Hybrid Match

Bullet Weight: 155 gr.
Muzzle Velocity: 2,724 fps
Average Group: .625 in.

Sig Venari SP

Bullet Weight: 130 gr.
Muzzle Velocity: 2,719 fps
Average Group: 1.12 in.

Muzzle velocity is the average of 10 consecutive shots as measured by a Caldwell G2 chronograph. Accuracy is the average of five consecutive, three-shot groups fired from a sandbag rest at 100 yards.