.338-378 Weatherby Magnum Mark V Load Data

16 published .338-378 Weatherby Magnum Mark V reloading recipes across 5 powders and 3 bullet manufacturers, with bullet weights from 200 to 300 grains and recorded velocities between 2,754 and 3,383 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
16
Powders
5
Bullet makers
3
Bullet weights
200–300 gr

Sample .338-378 Weatherby Magnum Mark V loads

The first 5 of 16 recipes.

BulletPowderChargeVelocityCOALPrimer
W-W Power Point 200grHodgdon H-4831109 gr3,356 fps
W-W Power Point 200grHodgdon H-570123 gr3,201 fps
W-W Power Point 200grHodgdon H-870128 gr3,377 fps
W-W Power Point 200grIMR IMR-4350105 gr3,383 fps
W-W Power Point 200grNorma MRP109 gr3,379 fps

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