The Thompson Center Dimension is a bolt-action rifle chambered in .308 WIN/7.62MM NATO with a 22-inch barrel and an integrated optics base. 
 

Key Specifications: 

• UPC: 090161047655 
• Caliber: .308 WIN/7.62MM NATO 
• Action: Bolt Action 
• Capacity: 3 Rounds 
• Barrel Length: 22 inches 
• Rate of Twist: 1:12 RH 
• Receiver Material: Steel 
• Sights General: None, Integrated Base 
• Total Height: 3.5 inches 
• Total Length: 47.875 inches 
   

Detailed Features: 

The Dimension is built around modularity — the design allows caliber swaps by changing the barrel, bolt head, and magazine, which is the platform's primary selling point. The steel receiver and 22-inch barrel give solid rigidity for consistent accuracy. The 1:12 RH twist rate stabilizes standard .308 projectiles well. 
 
The integrated optics base eliminates the need to drill and tap for a scope mount. At 47.875 inches overall, the rifle is full-size and handles .308 ballistics effectively at hunting ranges. 
 
Capacity is 3 rounds, which is typical for a hunting bolt gun. 
 

Usage Scenarios: 

 
The .308 chambering makes this suitable for deer and elk hunting at moderate to long ranges. The modular barrel system is useful for hunters who want one platform in multiple calibers. The integrated scope base and no-iron-sights setup signals it's intended to be run with optics from the start.

Owner feedback on the Thompson Center Dimension .308 tends to center on the modular design, with accuracy and build quality as secondary highlights.

Versatility is the most frequently discussed strength. The ability to switch calibers by swapping barrel components appeals to hunters who want one chassis for multiple applications. This is the reason most buyers chose it over a fixed-caliber rifle.

Accuracy reports are generally good, with owners noting solid groupings at hunting ranges. The bolt cycles smoothly by most accounts.

Build quality comes across as solid — the steel receiver gives the gun a substantial feel, and most owners consider it well-constructed.

On the negative side, weight is a consistent complaint from hunters who do a lot of walking. It's not the lightest option in its class.

The adjustable stock works for most shooters, but a few feel the adjustability range could be wider for better fit across different body types.

Price opinions are split. Some think the modularity justifies the cost; others compare it to fixed-caliber rifles at lower price points and question the value if they only ever plan to run one chambering.

Aftermarket support is thinner than for more established platforms. Owners looking to customize heavily find fewer options than they would with a Remington 700 or similar platform.