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406 Inch (Official) Bull Taken with New Two-Seventy Cartridge: The 6.8 Western

406 Inch (Official) Bull Taken with New Two-Seventy Cartridge: The 6.8 Western
The empty 6.8 Western cartridge used by the author to harvest a massive bull elk at 679 yards.

There’s a new cartridge on the block, and it’s one cool customer. Built to fulfill the desires of the classic .270 Winchester shooting crowd while meeting the demands of today’s long-range shooting and hunting protocol, the brand-new 6.8 Western steps into the arena and doffs its ten-gallon hat.

The Six-Eight is the brainchild of a collaboration between the engineers at Winchester and Browning. Its parent cartridge is Winchester’s own .270 WSM, with the shoulder pushed back to accommodate the long, heavy-for-caliber, aerodynamic projectiles that modern long-range shooters love to send downrange. Barrel twist rate in rifles chambered for the new cartridge is updated as well, to accommodate and stabilize those same high-BC bullets. The twist rate in traditional .277 barrels (.270 Win, .270 WSM) is 1-10, while the twist rate in new 6.8 Western rifles will be 1-8 inches. Most at home in short rifle actions, the 6.8 is a cartridge suitable for lightweight, fast cycling hunting rifles, as well as heavier, more stable platforms.

406 Inch (Official) Bull Taken with New Two-Seventy Cartridge: The 6.8 Western
Details and specs on the new cartridge.

The 6.8 Western has proven to be accurate, efficient, and deadly (more on that in a minute). It’s not a barrel-burner, either, with factory ammo producing advertised muzzle velocities ranging from 2835 up to 2970 feet per second. Two loads are initially available: Winchester’s Expedition Long Range load features Nosler 165-grain Accubond Long Range bullets and sports a muzzle velocity of 2970 fps and a G1 BC of 0.620. Browning’s Long Range Pro Hunter load is topped with a new 175-grain Tipped Game King bullet from Sierra and offers a muzzle velocity of 2835 fps, with a G1 BC of 0.617. Additional loads will soon be available, including a “green” load topped with a 160-grain Winchester Copper Impact projectile, and a 165-grain Match Competitive Target round from Winchester.

Browning will make their X-Bolt rifle lineup available in the new 6.8 Western, and Winchester will chamber the new round in both their XPR and M70 rifle lineups.

I was able to get my hands on a 6.8 Western Browning X-Bolt Hunter early in the game. Only the Browning Long Range Pro Hunter ammo was available at the time – the one loaded with Sierra’s new 175-grain TGK bullet. Initial testing produced remarkable accuracy, with average three-shot group size coming in well under .75 MOA. Needless to say, I was impressed. Chronographed velocity on the factory ammo was initially a bit slow at 2780 fps, but after about 50 rounds the barrel broke in nicely and velocity was almost exactly as factory advertised at 2835 fps.

406 Inch (Official) Bull Taken with New Two-Seventy Cartridge: The 6.8 Western
The 6.8 Western tested well, averaging well under three-quarter MOA accuracy from the Browning X-Bolt Western Hunter test rifle.

An early-season elk hunt found me afield with the 6.8 Western X-Bolt in hand. I had worked the rifle out to ranges approaching 850 yards, so while I hoped for a close shot I was prepared for a long one if it became necessary. A surprise encounter with a true monster bull showed up the second night of hunting, and with my son watching through a spotting scope I made a perfect first-shot kill at 679 yards, dropping the 406 6/8 gross (official score – just in) B&C bull in his tracks. Again, I was impressed.

406 Inch (Official) Bull Taken with New Two-Seventy Cartridge: The 6.8 Western
The author and his big bull, taken with the new 6.8 Western cartridge on a public-land, DIY backcountry hunt.

Fast-forward to an Arizona border-country Coues deer hunt. I’d loaned my 6.8 rifle to writer and hunting buddy Jordan Voigt. He spotted a big buck at over 1,400 yards late one evening, and we made a fast stalk through the ocotillo, managing to close the distance to 496 yards. It was now or never, with shooting light fading fast. Jordan settled in behind the X-Bolt, dialed his scope, and dropped the buck with another perfect first-shot kill. Once again, I was impressed. The 6.8 Western has proven itself to be an accurate and lethal cartridge, and I wouldn’t hesitate to recommend it for use on everything from pronghorn antelope to Alaskan moose.

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