.257 Weatherby Magnum (Accurate Data) Load Data

24 published .257 Weatherby Magnum (Accurate Data) reloading recipes across 4 powders and 4 bullet manufacturers, with bullet weights from 85 to 120 grains and recorded velocities between 2,999 and 3,713 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
24
Powders
4
Bullet makers
4
Bullet weights
85–120 gr

Sample .257 Weatherby Magnum (Accurate Data) loads

The first 5 of 24 recipes.

BulletPowderChargeVelocityCOALPrimer
Hornady SP 100grAccurate AAC 310069.0 gr3,461 fps——
Hornady SP 100grAccurate AAC 310065.6 gr3,253 fps——
Hornady SP 100grAccurate AAC-435059.4 gr3,301 fps——
Hornady SP 100grAccurate AAC-435062.5 gr3,512 fps——
Hornady SP 100grAccurate AAC-870085.5 gr3,173 fps——

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