The Nosler Model 21 is a bolt-action rifle chambered in .300 Winchester Magnum. At 7.10 lbs. and 44.5 inches overall, it covers big game hunting and long-range target work without demanding a heavy carry. The all-weather epoxy stock has a gray speckled finish that holds up outdoors. 
 

Key Specifications 

• Brand: Nosler 
• Model Name: M21 
• Caliber: .300 Winchester Magnum 
• Action: Bolt Action 
• Barrel Length: 24 inches 
• Capacity: 3+1 rounds 
• Weight: 7.10 lbs. 
• Overall Length: 44.5 inches 
• Stock Material: All-weather epoxy with gray speckled finish 
• Trigger Type: TriggerTech Field 
• Safety Mechanism: Lever safety 
• Sights: Integrated base for optics attachment 
• Barrel Twist Rate: 1:10" 
   

Detailed Features 

1. Match Grade Barrel: Recessed crown with threaded muzzle (1/2-28 or 5/8-24 tpi) for suppressors or muzzle brakes. 
    
2. Self-indexing Recoil Lug: Stainless steel lug seats without manual alignment, providing consistent barrel support shot to shot. 
    
3. TriggerTech Field Trigger: Frictionless release with no creep, suitable for hunting and competitive use alike. 
    
4. All-Weather Stock: The epoxy construction handles moisture and temperature swings without warping.

Owners of the Nosler M21 in .300 Win Mag generally respect the rifle's precision engineering. The gray speckle finish draws consistent praise for its look, and long-range accuracy is the top cited strength — most users report tight groups at extended distances whether hunting or on paper.

Bolt feel comes up often as a positive: smooth cycling and well-fitted components give it a premium-action feel. The TriggerTech Field trigger gets credit for a clean break with no grit.

Price is the main friction point. Most buyers consider it worth the cost given the build quality, but it's hard to ignore that comparable accuracy can sometimes be had for less. Ammunition cost for .300 Win Mag also gets mentioned when shooters discuss regular range use.

On the practical side, accessories and optics mount readily thanks to the integrated base, and the threaded muzzle expands suppressor options.