.257 Weatherby Magnum (Barnes Data - 2010) Load Data

12 published .257 Weatherby Magnum (Barnes Data - 2010) reloading recipes across 5 powders and 1 bullet manufacturers, with bullet weights from 80 to 115 grains and recorded velocities between 3,073 and 3,858 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
12
Powders
5
Bullet makers
1
Bullet weights
80–115 gr

Sample .257 Weatherby Magnum (Barnes Data - 2010) loads

The first 5 of 12 recipes.

BulletPowderChargeVelocityCOALPrimer
Barnes TSX FB 115grHodgdon H-100067.5 gr3243 fps——
Barnes TSX FB 115grHodgdon H-100063.5 gr3101 fps——
Barnes TSX FB 115grHodgdon US-86975.0 gr3073 fps——
Barnes TSX FB 115grHodgdon US-86979.0 gr3310 fps——
Barnes TTSX BT 80grIMR IMR-483165.5 gr3589 fps——

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