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.257 Weath. Mag.

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Load Data for Caliber .257 Weath. Mag. - Technical Specifications Image

Technical Specifications:

Caliber:
.257 Weath. Mag.
Bullet Diameter:
0.257" | 6.53mm
Primer Size:
Large Rifle Magnum (LRM)
Max. Case Length (l3):
2.549" | 64.74mm
Max. Cartridge Length / OAL:
3.170" | 80.52mm
Max. Standardized :
63817 psi | 4400 bar
Case Capacity:
84.0 Grains of Water | 5.45 cm3
CID:
CID_247
Standard
C.I.P.
Letztes Update:
10/7/2024
caliber_reloading.webp
  • The .257 Weatherby Magnum is a high velocity cartridge developed by Roy Weatherby in the 1950s. It is based on a stretched .300 H&H case and uses a .257 caliber bullet, giving it outstanding performance for long-range shooting or hunting big game animals such as elk and bighorn sheep.

    The .257 Weatherby Magnum is known for its excellent accuracy and flat trajectory, making it an ideal choice for serious target shooters or hunters looking to take down large animals at long distances. Its high velocity also gives it impressive energy levels and great penetration, ensuring reliable performance no matter what type of game you're hunting.

  • Velocity (V0)

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    Energy  (E0)

    Ballistic Coefficient (BC1)

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    Most popular powders from our community members for this caliber:

  • Weight vs. Velocity - Suitable Bullets for this Caliber

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    Barrel Length  Variation vs. Velocity - by Bullet Weight

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

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