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.340 Weath. Mag.

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Caliber .340 Weath. Mag. load data and technical Specifications

Caliber Specifications:

Caliber:
.340 Weath. Mag.
Standard / Datasheet:
C.I.P.
Bullet Diameter:
0.338" | 8.59mm
Primer Size:
Large Rifle Magnum (LRM)
Max. Case Length:
2.825" | 71.75mm
Max. Cartridge Length / OAL:
3.675" | 93.34mm
Max. Standardized Pressure:
63817 psi | 4400 bar
Case Capacity:
100.0 Grains of Water
CID:
CID_476
  • The .340 Weatherby Magnum is a rifle cartridge developed by Roy Weatherby in 1963. It was designed as a high-velocity, flat-shooting cartridge that would offer the power and accuracy needed for hunting and long-range shooting.

    The cartridge is based on a modified .300 Weatherby Magnum case, which was necked up to accept .338 caliber bullets. The resulting cartridge has a bullet diameter of .338 inches and a case length of 2.825 inches.

    The .340 Weatherby Magnum is capable of firing bullets weighing between 200 and 300 grains at muzzle velocities ranging from 2,850 to 3,250 feet per second. It is a powerful cartridge that is suitable for hunting a wide range of game animals, including elk, moose, and brown bear, at long ranges.

    One of the main advantages of the .340 Weatherby Magnum is its long-range accuracy, which makes it popular among long-range shooters and hunters. It is also known for its flat trajectory, which makes it easier to shoot accurately over long distances.

    The .340 Weatherby Magnum has gained a following among hunters and shooters who appreciate its combination of power, accuracy, and long-range capabilities. It is typically chambered in bolt-action rifles, and a number of firearms manufacturers produce rifles that are chambered for the .340 Weatherby Magnum cartridge.

    While the .340 Weatherby Magnum is not as widely available as some of the more established cartridges on the market, it has a dedicated following and is available from a number of firearms manufacturers. It is also relatively expensive compared to some of the more common cartridges, due to its specialized design.

  • Bullet Weight (gr) ->
    0-50
    50-75
    75-100
    100-150
    150-200
    200-300
    >300

    The following table indicates  for this caliber and various bullet weight ranges (in grains) which powders are suitable (👍) and popular among our reloading community (👍👍).  This might evolve over time as more community members share their loads and as we accumulate more calculations and tests with our balistics calculator.

  • Weight vs. Velocity - Suitable Bullets for this Caliber

    You need to get an access license to view this chart. See an example with the following caliber: .22 Nosler

    Barrel Length  Variation vs. Velocity - by Bullet Weight

  • Number of loads in this caliber shared by community members:

    0

.340 Weath. Mag. load data available with the following bullets:

(most popular first)

Filter by Bullet Weight (Grains)
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