Description
The Tundra is what happens when Proof Research takes everything they learned building tactical precision rifles and packs it into something you can carry up a mountain. This one is chambered in .300 PRC, a cartridge purpose-built for stretching shots way out there, and it wears a 22 inch Sendero contour carbon fiber wrapped barrel with a 1-in-9 twist that stabilizes the heavy, high-BC bullets the cartridge was designed around. The muzzle comes threaded 5/8-24 with a thread protector, so adding a brake or suppressor is as simple as spinning one on.
What Makes the Tundra Shoot So Well
At the heart of the rifle sits a Defiance Ruckus action, a smooth, tight-tolerance receiver that custom builders have trusted for years. Proof beds it into their own carbon fiber Tundra stock with extreme-accuracy bedding, then finishes the package with a crisp TriggerTech trigger and a BDL style hinged floorplate magazine. Every rifle is test fired before it leaves Montana and backed by a sub 1/2 MOA accuracy guarantee, which is a bold promise for a hunting-weight rifle in a magnum chambering. The carbon fiber barrel is not just about shaving ounces either; the wrap pulls heat away from the bore so your groups stay honest through longer strings than a pencil-thin steel barrel could manage.
Built for the Backcountry, Fit Like a Custom
The stock is where the Tundra separates itself from most lightweight hunting rifles. It takes the classic Monte Carlo profile and adds an adjustable cheek piece, so you can dial in perfect eye alignment behind a big scope instead of craning your neck. A single-piece pinned rail up top gives you a rock-solid optics base, the modified ball bolt knob is quick to run without snagging on gear, and the 13 5/8 inch length of pull fits most builds right out of the box.
Proof Research Tundra .300 PRC: The Bottom Line
This is a legitimate long-range hunting rig in the Black Jungle finish, light enough to carry all day and accurate enough that the rifle will never be your excuse. For elk, mule deer, or ringing steel past 1,000 yards, the Tundra earns its keep.
Key Specifications
- Manufacturer: Proof Research
- Manufacturer Part Number: 140116
- UPC: 843068140116
- Caliber: .300 PRC
- Action: Bolt Action, Defiance Ruckus (Right Hand)
- Barrel Length: 22"
- Barrel: Carbon fiber wrapped, match grade, Sendero contour
- Twist Rate: 1:9
- Muzzle Thread: 5/8-24 with thread protector
- Trigger: TriggerTech
- Stock: Proof carbon fiber Tundra stock, Black Jungle, adjustable cheek piece
- Magazine Type: BDL style
- Optics Base: Single-piece pinned rail
- Length of Pull: 13 5/8"
- Accuracy Guarantee: Sub 1/2 MOA
- Action Finish: Black Cerakote
What’s Included
- Proof Research Tundra bolt action rifle
- BDL style magazine system
- Muzzle thread protector
Frequently Asked Questions
Is the Proof Research Tundra accurate enough for long-range hunting?
Yes, every Tundra is test fired at the factory and backed by Proof Research's sub 1/2 MOA accuracy guarantee. Between the Defiance Ruckus action, precision bedding, and match-grade carbon fiber barrel, this rifle is built to hold tight groups well past typical hunting distances. Paired with quality .300 PRC ammo, it is fully capable of ethical shots at extended range.
Can I put a suppressor or muzzle brake on the Tundra?
Absolutely. The 22 inch barrel comes threaded 5/8-24 from the factory and ships with a thread protector installed. That is the most common thread pitch for .30 caliber muzzle devices, so most brakes and suppressor mounts will spin right on.
Why does the 1:9 twist matter for .300 PRC?
The .300 PRC was designed around long, heavy, high ballistic coefficient bullets in the 212 to 230 grain range, and those projectiles need a faster twist to stabilize properly. The Tundra's 1-in-9 twist handles the heavy match and hunting bullets that make this cartridge shine at distance. That means you get the full downrange potential the cartridge was built for.
How heavy is the Proof Research Tundra for backcountry hunting?
The Tundra line starts right around 7 pounds bare, with exact weight varying by chambering and barrel length. For a magnum-chambered rifle with a full accuracy guarantee, that is impressively packable. The carbon fiber barrel and stock do the heavy lifting on weight savings without giving up the stiffness you need for consistent accuracy.





Reviews
There are no reviews yet.