.338-378 Weatherby Load Data

85 published .338-378 Weatherby reloading recipes across 6 powders and 5 bullet manufacturers, with bullet weights from 200 to 300 grains and recorded velocities between 2,722 and 3,528 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
85
Powders
6
Bullet makers
5
Bullet weights
200–300 gr

Sample .338-378 Weatherby loads

The first 5 of 85 recipes.

BulletPowderChargeVelocityCOALPrimer
Speer Speer 200grHodgdon H-4831108.0 gr3,435 fps——
Speer Speer 200grHodgdon H-4831107.0 gr3,360 fps——
Speer Speer 200grIMR IMR-7828110.0 gr3,474 fps——
Speer Speer 200grIMR IMR-7828111.0 gr3,528 fps——
Speer Speer 200grIMR IMR-7828109.0 gr3,435 fps——

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