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.338 Win Mag.

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Caliber .338 Win Mag. load data and technical Specifications

Caliber Specifications:

Caliber:
.338 Win Mag.
Standard / Datasheet:
C.I.P.
Bullet Diameter:
0.338" | 8.59mm
Primer Size:
Large Rifle (LR)
Max. Case Length:
2.500" | 63.50mm
Max. Cartridge Length / OAL:
3.340" | 84.84mm
Max. Standardized Pressure:
62366 psi | 4300 bar
Case Capacity:
86.0 Grains of Water
CID:
CID_465
  • The .338 Winchester Magnum is a powerful centerfire rifle cartridge designed for hunting large and dangerous game, such as elk, moose, and bear. It was introduced in 1958 by Winchester Repeating Arms Company and has since become a popular choice among hunters and long-range shooters.The .338 Winchester Magnum has a bullet diameter of .338 inches and a case length of 2.5 inches. It is capable of firing bullets weighing between 200 and 250 grains at velocities ranging from 2,700 to 2,900 feet per second, depending on the load. This results in a high muzzle energy and a flat trajectory, making it an effective choice for long-range shooting.However, the .338 Winchester Magnum also generates a significant amount of recoil, which can make it difficult to shoot accurately for some people. It is also a relatively expensive cartridge to shoot, as the ammunition can be costly.

  • Velocity (V0)

    .338 | 160gr | Barnes TTSX BT

    [3009 fps | 917 m/s]

    .338 Win Mag. + Barnes
    .338 | 180gr | Nosler AccuBond

    [2890 fps | 881 m/s]

    .338 Win Mag. + Nosler
    .338 | 185gr | Barnes TSX BT

    [2890 fps | 881 m/s]

    .338 Win Mag. + Barnes

    Energy  (E0)

    Ballistic Coefficient (BC1)

  • 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:

    31

.338 Win Mag. load data available with the following bullets:

(most popular first)

Filter by Bullet Weight (Grains)
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