Description
This is the Weatherby Mark V Accumark 30-378 Weatherby Magnum with a 26-inch barrel, left-hand configuration. It’s a long-range hunting rifle built for shooters who demand flat trajectories and serious energy on target. The 30-378 Wby Mag is one of the fastest production cartridges, and this Accumark delivers it with the accuracy and reliability Weatherby is known for. We added this to our catalog in early 2024 and it’s been a consistent seller — our customers keep coming back for them.
Key Highlights
- Left-hand Mark V action — smooth, controlled-round feed, designed for southpaws without compromise.
- #2 contour fluted stainless barrel — 26 inches with a 1:10 twist, free-floated for consistent accuracy.
- Accubrake ST muzzle brake — reduces recoil significantly, making the 30-378 manageable for follow-up shots.
- Bell & Carlson synthetic stock — aluminum bedding block, raised Monte Carlo comb, and textured grip panels for a solid hold in any weather.
- Weight on our scale: 4.9 oz — actually, that’s the trigger weight we measured; the rifle itself is a solid 8.5 lbs, balanced for carrying and shooting.
Product Details
| Caliber | 30-378 Weatherby Magnum |
| Action | Mark V, left-hand, controlled-round feed |
| Barrel Length | 26 inches |
| Twist Rate | 1:10 |
| Magazine Capacity | 3+1 |
| Stock | Bell & Carlson synthetic, aluminum bedding block |
| Weight (measured) | 4.9 oz (trigger pull), rifle 8.5 lbs |
| Overall Length | 46 inches |
What Buyers Ask
Does this rifle come with a scope or rings?
No, it ships as a barreled action and stock — no optics or rings included. It has a 2-piece Talley base pre-installed, so you can mount your own rings and scope right out of the box.
Is the Accubrake removable? Can I swap it for a suppressor?
Yes, the Accubrake ST is threaded on a 5/8-24 muzzle thread. You can remove it and install a suppressor or a thread protector. Just note the barrel is not threaded for a brake underneath — the brake itself is the thread adapter.
How does the 30-378 compare to a .300 Win Mag for recoil?
The 30-378 produces more muzzle energy — roughly 4,100 ft-lbs vs 3,700 for .300 Win Mag. But with the Accubrake, felt recoil is closer to a .308 Win. Without the brake, it’s noticeably more than a .300 Win Mag. We recommend the brake for most shooters.
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