The Weatherby Mark V Accumark in .300 Wby Mag is a bolt-action rifle built around the Mark V action — Weatherby's nine-lug, 54-degree throw design — paired with a 26-inch fluted stainless barrel and a fixed Monte Carlo fiberglass stock with matte gel coat finish. The Accubrake ST muzzle brake is standard, and the TriggerTech Field trigger is factory-adjustable. 
 

Key Specifications 

• Model: Mark V Accumark 
• Caliber: .300 Weatherby Magnum 
• Action: Bolt Action 
• Barrel Length: 26 inches (Fluted) 
• Twist Rate: 1:10" 
• Capacity: 3+1 rounds 
• Trigger Type: TriggerTech Field adjustable trigger 
• Safety Mechanism: Three-position safety 
• Overall Length (OAL): 48.25 inches 
• Weight: 8.30 lbs 
• Stock Type: Fixed Monte Carlo fiberglass stock with matte gel coat finish 
   

Features 

The 26-inch fluted barrel keeps weight in check while still pulling full velocity from the .300 Wby Mag. Fluting also helps heat move off the barrel faster during extended range sessions. The 1:10" twist handles heavier .308-diameter bullets well. 
 
The TriggerTech Field trigger is a genuine upgrade over older Weatherby triggers — it breaks cleanly and adjusts without gunsmithing. The Accubrake ST noticeably cuts felt recoil, which matters with a cartridge that hits this hard. Three-position safety covers fire, safe-with-bolt-operable, and full-lock. Drilled and tapped for scope mounting. 
 

Usage 

• Long-range big game hunting: the .300 Wby Mag has a flat trajectory and the 26-inch barrel extracts near-maximum velocity 
• Competitive precision rifle: sub-MOA capability and adjustable trigger suit distance shooting 
• Mountain hunting: 8.30 lbs is not ultralight, worth considering if you're covering miles on foot

Owners of the Weatherby Mark V Accumark in .300 Wby Mag tend to rate it highly for accuracy and build quality, while consistently raising the same two practical concerns.

On accuracy: most owners report sub-MOA groups with quality ammunition, which matches Weatherby's factory guarantee. The TriggerTech trigger draws specific praise for how much it improved over older Mark V triggers — clean, light, and consistent. The Accubrake works; recoil from .300 Wby Mag is genuinely tamed to something manageable for follow-up shots.

Build quality comments are positive across the board. The fiberglass stock resists weather better than wood, and the stainless barrel handles moisture well. People who use this rifle in wet or cold conditions appreciate that.

Two negatives come up repeatedly. First, weight: at 8.30 lbs before optics and ammunition, it adds up for anyone covering serious terrain on foot. It's manageable from a blind or bench, harder on a mountain pack trip. Second, ammunition cost and availability. .300 Weatherby Magnum is not a commodity caliber. Owners who shoot it heavily spend more per round than 7mm Rem Mag or .300 Win Mag shooters, and some areas stock it inconsistently.

A few newer rifle owners mention the .300 Wby Mag has noticeable recoil even with the muzzle brake, so developing good technique takes some range time. Not a fault of the rifle, just worth knowing.