.338-378 Weatherby Magnum (Norma data) Load Data

38 published .338-378 Weatherby Magnum (Norma data) reloading recipes across 2 powders and 4 bullet manufacturers, with bullet weights from 200 to 300 grains and recorded velocities between 2,638 and 3,392 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
38
Powders
2
Bullet makers
4
Bullet weights
200–300 gr

Sample .338-378 Weatherby Magnum (Norma data) loads

The first 5 of 38 recipes.

BulletPowderChargeVelocityCOALPrimer
Nosler BST 200grNorma MRP104.0 gr3123 fps3.740
Nosler BST 200grNorma MRP109.6 gr3389 fps3.740
Hornady SP 200grNorma MRP111.4 gr3392 fps3.740
Hornady SP 200grNorma MRP104.0 gr3100 fps3.740
Nosler Partition 210grNorma MRP102.0 gr3140 fps3.701

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