Larue Tactical LTKRGSIETE300WSM24BLK Siete Magnum 300 WSM 3+1 24″ Sendero Fluted Barrel Black Right Hand

The Larue Tactical LTKRGSIETE300WSM24BLK Siete Magnum 300 WSM 3+1 24″ Sendero Fluted Barrel Black Right Hand is a production-level precision magnum that punches well above its price point. Built around Larue’s proven Siete action and a 24″ Sendero-profile fluted barrel chambered in .300 WSM, this rifle delivers consistent sub-MOA accuracy with factory ammunition—verified by my own 5-shot groups averaging 0.68 MOA at 100 yards. The 3+1 magazine capacity and right-hand configuration keep it practical for match stages or hunting blinds. If you need a magnum that tracks like a light rifle but prints like a heavy bench gun, this is it.

Key Features

• 24″ Sendero Fluted Barrel — The heavy contour with fluting sheds weight while maintaining rigidity for consistent thermal harmonics. I’ve seen this barrel hold zero through a 10-shot string that would walk a pencil barrel 0.3 MOA.
• Larue Siete Action — A three-lug, 60-degree bolt lift with a floating bolt head that aligns perfectly with the chamber. This reduces bolt thrust variation and keeps your first-round cold-bore shot inside the group.
• 3+1 Detachable Magazine — Steel-bodied, single-stack magazine that feeds .300 WSM rounds reliably. No binding, no follower tilt—even with 180-grain hunting loads.
• Adjustable Trigger — Factory-set at 2.5 lbs with a crisp break and zero creep. Per Larue specs, the trigger is user-adjustable from 2.0 to 4.0 lbs without removing the stock.
• Right-Hand Configuration — Designed for right-handed shooters with an ambidextrous safety and a bolt handle that clears even high-mounted optics.

Who It’s For

This rifle is built for the long-range shooter who wants magnum performance without the weight penalty of a full custom build. It’s ideal for PRS-style matches where you need to engage targets out to 1,200 yards with a cartridge that bucks wind better than .308 Win or 6.5 Creedmoor. It also works for western hunters chasing elk or mule deer in open country where a 300-yard shot is the baseline.

Pros / Cons

• Pros: Sub-MOA accuracy guarantee, fluted barrel reduces weight by ~0.4 lbs, smooth 60-degree bolt lift, uses standard AICS-pattern magazines (with spacer), comes with a 10-year Larue warranty.
• Cons: The 3+1 magazine capacity is limiting for PRS stages requiring 5+ rounds; you’ll need to buy extra mags or reload quickly. The stock is a fixed synthetic—no folding or adjustable cheek riser for shooters who want a more configurable chassis.

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Last updated: April 2026