Win. and 30-06, and Series C includes the 7mm Rem. and 300 Win. Magnums. To switch between Series, a different bolt and magazine assembly is required and is furnished along with the barrel as a set. All components within a series are prominently marked with the appropriate letter to avoid any confusion, yet there are 88 separate warnings in bold red lettering throughout the 40-page owner’s manual! T/C describes the system as LOC, for Locking Optimized Components. Like most bolt-action rifles made in


Germany today, the Dimension’s barrel interchangeability feature is made feasible by the fact its bolt locks up with the barrel itself rather than the receiver. Three for- ward locking lugs oriented on 120-degree centers reduce bolt rotation (handle lift) to 60 rather than 90 degrees. T/C’s other bolt-action rifles, the Icon and Venture, also have three-lug locking systems, but they lock up with abutments in the receiv- er, as do almost all other American-made bolt actions. (And speaking of American, Ruger’s newest centerfire by that name also is a three-lug action that locks up in the receiver.) With direct barrel lock-up the


receiver becomes a non-stressed com- ponent, and therefore can be made of lightweight alloy, as is the case here. The Dimension’s receiver is essentially an aluminum tube weighing a mere 11 ounces complete with trigger unit, safety and bolt stop/release. That’s 4 ounces less than the fluted bolt alone! Of course, being a “fat bolt,” it’s going to weigh more than a more slender Mauser-type bolt with protruding locking lugs. The barreled action is mated to the


stock with two allen-headed machine screws located in the usual locations at the front and rear of the receiver. The rear tang sits on a thick aluminum pillar, and up front, a deep notch in the bottom of the receiver ring engages a steel recoil lug embedded into the injection-molded stock. Those are the only contact points for the receiver. Once the barreled action is free of


the stock, the barrel is switched out using the Torque Tool and Leverage Tool that are supplied with the gun. The Leverage tool has a steel V-block at one end that clamps to the receiver using the threaded hole of the forward action screw. There are two holes in the V-block, one marked L for loosening the barrel lock nut, and T for tightening. To remove the barrel, which is


a simple slip-fit with the receiver, a steel shaft on one side of the Torque tool is slipped into the L hole, which at the same time meshes its gear teeth with those of the Leverage tool. Explaining the opera- tion is a bit difficult – the photos (page 108) make it easy to understand. The Torque tool has two sides – one


is the gear side for the barrel lock ring, and the other is an Allen tool that fits the action screws. When tightening either, the torque values are the same. In other words, when tightening the barrel lock ring or snugging up the action screws,


the ratchet starts to slip when the pre-set torque value is reached. This obviously provides a desired consistency for the bedding dynamics as well as barrel/ receiver relationship. Like its Venture and Icon siblings,


Dimension barrels employ T/C’s 5R ri- fling which claims two unique features. One is that each land is directly opposite a groove, which is not the case with conven- tional 6-groove rifling. More important, however, is the fact that the lands do not have perpendicular sides, which in turn results in 90-degree inside corners at their


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