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.30-378 Weath. Mag.

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Load Data for Caliber .30-378 Weath. Mag. - Technical Specifications Image

Technical Specifications:

Caliber:
.30-378 Weath. Mag.
Bullet Diameter:
0.308" | 7.82mm
Primer Size:
Large Rifle Magnum (LRM)
Max. Case Length (l3):
2.913" | 73.99mm
Max. Cartridge Length / OAL:
3.655" | 92.84mm
Max. Standardized :
63817 psi | 4400 bar
Case Capacity:
133.0 Grains of Water | 8.64 cm3
CID:
CID_333
Standard
C.I.P.
Letztes Update:
10/7/2024
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  • The 30-378 Weatherby Magnum is a powerful and highly regarded rifle cartridge developed by Roy Weatherby in 1959. This cartridge is known for its exceptional velocity, accuracy, and stopping power, making it a favorite among long-range shooters and hunters. Roy Weatherby, a prominent firearms designer, created the 30-378 Weatherby Magnum as part of his efforts to push the boundaries of long-range shooting. This cartridge is based on the .378 Weatherby Magnum case, necked down to accept .30 caliber bullets. The result is a cartridge with impressive ballistic capabilities. One of the key characteristics of the 30-378 Weatherby Magnum is its remarkable speed. It propels bullets at velocities exceeding 3,500 feet per second (fps), resulting in a flat trajectory and minimal bullet drop at extended distances. This makes it a popular choice for precision shooters who require consistent accuracy over long ranges. Due to its ballistic performance, the 30-378 Weatherby Magnum is well-suited for various applications. It is a favored cartridge for long-range target shooting, where marksmen appreciate its ability to maintain accuracy at great distances. Additionally, hunters find it valuable for pursuing large game species such as elk, moose, and bears, thanks to its deep penetration and stopping power. The cartridge's design is based on the belted .378 Weatherby Magnum case, which provides ample room for high powder charges. This design feature contributes to the cartridge's impressive velocity and energy levels. Shooters commonly opt for heavy-for-caliber bullets with high ballistic coefficients (BC) to enhance its long-range performance and resistance to wind drift. Despite its undeniable performance benefits, it's important to note that ammunition for the 30-378 Weatherby Magnum can be less common and more expensive compared to some other cartridges. As a result, many enthusiasts choose to handload their ammunition, allowing them to customize their loads for optimal precision and cost savings. In addition to its standard use, the 30-378 Weatherby Magnum has also served as the basis for creating wildcat cartridges. Shooters experiment with different bullet options and powders to develop customized cartridges tailored to specific shooting needs and preferences. In conclusion, the 30-378 Weatherby Magnum remains a testament to Roy Weatherby's commitment to advancing the performance of rifle cartridges. Its exceptional velocity, accuracy, and stopping power make it a sought-after choice for those who demand superior long-range shooting and hunting capabilities. Whether you are an experienced precision shooter or an avid hunter seeking a cartridge capable of delivering outstanding performance at extreme distances, the 30-378 Weatherby Magnum continues to stand out as a formidable option in the world of firearms.

  • 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

.30-378 Weath. Mag. load data available with the following bullets:

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