It was a very short stalk – too short, in fact. Normally the climbing, running or sneaking that follows the initial sighting of an animal in spot-and-stalk hunting enables a hunter to get over that first rush of adrenaline. But this time it happened all too quickly, and as I eased the rifle into my shooting sticks, I could barely hear the guide give me the range, his voice a slur that droned weakly behind my deafening breathing and the bass-drum rhythm of my heartbeat – until the crack of the rifle.
I was hunting black bear in northern British Columbia, and as I stomped around the pines and glassed the ridges and log roads that loosely connect this vast expanse of scenic beauty and harsh terrain, it occurred to me that the trek presented a new first. It wasn't the big, toothy bears, or even hunting a locale that required a passport; instead, the hunt had given me the opportunity to use the first Winchester semi-automatic, center-fire sporting rifle manufactured during my lifetime.
Produced from 1961 to 1973, Winchester's earlier semi-automatic rifle, the Model 100, was gas-operated and chambered for .243 Win., .284 Win. and .308 Win. A little more than 260,000 were manufactured. With a three-lug bolt, detachable box magazine, hand-checkered American stock and the ability to be quickly disassembled by removing two stock screws and four pins, the Model 100 was reviewed favorably in American Rifleman (July 1960, p. 21) and by the shooting public. Then it was gone.
Now, in the wake of the closure of the USRAC manufacturing facility in New Haven, Conn., the new Super-X Rifle (SXR), produced by parent company Fabrique Nationale in Herstal, Belgium, gives Winchester its first center-fire semi-automatic in more than three decades. And it's obvious even at first glance that this is not your father's semi-auto.
The SXR is based on the BAR ShortTrac and LongTrac rifles, which are produced by USRAC's sister company, Browning. Like the BAR, the SXR exudes the modern styling and influence of its European heritage. Built on an aluminum receiver, the SXR features a two-piece, walnut stock and fore-end that exhibits sleek, forward-sloping angles. It feeds from a detachable box magazine, and there is no external bolt release; only an empty magazine in the rifle will hold the bolt to the rear. A polymer trigger assembly contains a single-stage trigger; a cross-bolt safety is located directly to the rear of it. The stock is checkered on the pistol grip and fore-end, and a thick, black rubber recoil pad provides a comfortable mount. The Belgium-made, hammer-forged barrel wears a high-polish blue finish; the rifle has no sights; however, the receiver is drilled and tapped for scope bases.
Chambered in both short- and long-action cartridges, including .30-'06 Sprg., .270 WSM, .300 WSM and .300 Win. Mag., the SXR can handle magnum stress despite the aluminum receiver because Browning engineers employed a rotary, eight-lug bolt that locks into a barrel extension. The arrangement is reminiscent of many existing shotgun designs. This direct steel-to-steel lockup allows the SXR to take advantage of the weight saved by the unstressed aluminum alloy receiver. The barrel and barrel extension are locked to the receiver by means of a split block and two machine screws.
The SXR is a gas-operated, semi-automatic working on the short-stoke-piston method of operation. Upon firing, expanding propellant gases pass through a port in the barrel and into the gas cylinder beneath it to drive a piston rearward. The piston, in turn, pushes the inertia block, which compresses the action spring while maintaining engagement with the bolt assembly via two shotgun-like action bars. During bolt travel, the bolt assembly and action bars ride along raceways cut into the side of the receiver walls.
As the bolt assembly travels rearward, a sliding-plate type extractor withdraws the empty case before a plunger-style ejector kicks it from the receiver. On the bolt carrier's return, a new cartridge is stripped from the box magazine. The action spring then drives the entire mechanism forward again, whereupon the rotating bolt head rotates 60 degrees by means of a cam pin in the bolt carrier and re-engages the barrel extension.
Disassembly of the SXR begins with the rifle unloaded and the bolt home in its forward most position. Then, using a 9 mm wrench or a small punch, the sling swivel stud on the forward, underside of the fore-end can be removed, and the fore-end attachment nut on the forward end of the fore-end can be loosened (not removed; this part is captured). Now the fore-end can be slid forward and away from the receiver and barrel.