Proof Research Terminus 300 WIN MAG


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  • Part Number: 109953
  • Caliber: 300 Win Mag
  • Action:  Right Hand
  • Weight: 6lb 13oz
  • Barrel Length:  26″
  • Twist: 1:10
  • Contour: Sendero Light
  • Magazine Type: BDL hinged floor plate
  • Cerakote Action Color: Black
  • Stock Color: Black Granite
  • Base: Integral rail
  • Bolt Knob: Modified ball
  • Muzzle: Finished/Threaded 5/8-24 with thread protector
  • Trigger: TriggerTech
  • Length of Pull: 13 5/8 inches
  • MSRP:  $6,999

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Proof Research Terminus 300 WIN MAG

Designed to meet the challenges of the long-range hunter, the Proof Research Terminus 300 WIN MAG possesses the core qualities of a professional sniper’s rifle—extreme accuracy, consistency, rigidity, and durability—but with significantly reduced weight and ergonomics optimized for hunting. Terminally accurate at extreme ranges and more than rugged enough for the rigors of high-country hunting, the Terminus is the ultimate long-range hunting platform. It means “the end” but for you it’s just the beginning.

Easy to carry and able to stand up to the recoil of larger calibers and the rigors of high-country hunting the Terminus is the ultimate long-range hunting platform. Features include a BDL hinged floor plate, integral rail and the popular Monte Carlo stock in a variety of finishes.

Proof Research Promise

Proof Research barrels, both carbon fiber and steel, exemplify the founders’ pursuit of relentless excellence. Whether your preference is for carbon fiber or steel, you can expect the finest rifle barrel in the industry.
Proof Research rifle barrels are available for both bolt-action and AR-style rifles in a variety of calibers, lengths and twists. Your bolt-action barrel will arrive ready for thread and chamber by your gunsmith.


  • PROOF Patented carbon fiber-wrapped, match-grade barrel
  • Individually hand-laid, custom-finished carbon fiber/Kevlar Monte Carlo stock
  • Hunter Action with 20 MOA integral rail
  • Extreme-accuracy bedding
  • TriggerTech trigger
  • Pachmayr® recoil pad
  • Test fired
  • ½ MOA accuracy guarantee


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