The Mossberg Patriot .450 BM is a bolt-action rifle chambered in .450 Bushmaster. The synthetic stock keeps it at 6.5 lbs, which is light for a rifle pushing this caliber. It ships with Weaver-style bases already mounted, so scope installation is straightforward. 
 

Key Specifications 

• Caliber: .450 Bushmaster 
• Capacity: 4+1 rounds 
• Barrel Length: 20 inches 
• Weight: 6.5 lbs 
• Overall Length: 40.25 inches 
• Finish Color: Black (Synthetic stock) 
• Manufacturer: Mossberg 
• Model Number: Patriot (Manufacturer Part Number: 28081) 
• Condition: New in Box 
   

Features 

 
The 20-inch barrel is threaded 11/16"-24 TPI, which opens the door for suppressors or muzzle brakes, a thoughtful inclusion on a hard-hitting caliber. 
 
The LBA (Lightning Bolt Action) trigger is adjustable, letting shooters dial in their preferred pull weight rather than living with whatever the factory ships. The spiral fluted bolt reduces weight slightly and cycles more smoothly than a standard round bolt. 
 
The 4+1 capacity is standard for a bolt-action in this class. The .450 Bushmaster cartridge is well-suited to deer and larger game; the flat trajectory and energy retention at hunting distances are what most owners buy this rifle for.

Owners of the Mossberg Patriot .450 BM generally have a favorable view, with a few recurring criticisms.

Affordability and field performance are the main draws. Shooters frequently note that the rifle delivers reliable accuracy at hunting distances without the price tag of more expensive bolt guns. The .450 Bushmaster cartridge itself gets consistent praise for terminal performance on deer and large game.

The build quality is generally well-received. Owners find the rifle comfortable to handle and describe it as feeling solid for its weight class. The included scope is mentioned as a practical bonus that lets buyers get to the range sooner.

The adjustable LBA trigger is appreciated, though some users say it still needs work even after adjustment. The pull is described as serviceable rather than outstanding. Weight is a minor complaint from a handful of hunters who find the 6.5 lbs tiring on long carries. Overall, the Patriot sits at a reasonable balance of price and performance for a hunting bolt-action.

A genuinely great rifle that left me very pleased.