.378 Weatherby Magnum (Swift Data) Load Data

36 published .378 Weatherby Magnum (Swift Data) reloading recipes across 7 powders and 1 bullet manufacturers, with bullet weights from 250 to 300 grains and recorded velocities between 2,641 and 3,196 fps. Every load lists charge weight, velocity, COAL, primer and case where the source published it.

Always begin at the minimum charge weight and work up gradually. Never exceed maximum loads. Verify all data against a current published reloading manual before use. LoadDevelopment.com is not responsible for errors or omissions in this data.
Recipes
36
Powders
7
Bullet makers
1
Bullet weights
250–300 gr

Sample .378 Weatherby Magnum (Swift Data) loads

The first 5 of 36 recipes.

BulletPowderChargeVelocityCOALPrimer
Swift A-Frame 250grHodgdon H-4350112.0 gr3155 fps——
Swift A-Frame 250grHodgdon H-4350104.2 gr2920 fps——
Swift A-Frame 250grHodgdon H-4831115.3 gr2980 fps——
Swift A-Frame 250grHodgdon H-4831124.0 gr3178 fps——
Swift A-Frame 250grIMR IMR-4350102.3 gr2861 fps——

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