257 Weatherby Magnum Load Data

248 published 257 Weatherby Magnum reloading recipes across 36 powders and 15 bullet manufacturers, with bullet weights from 70 to 134 grains and recorded velocities between 2,186 and 3,971 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
248
Powders
36
Bullet makers
15
Bullet weights
70–134 gr

Sample 257 Weatherby Magnum loads

The first 5 of 248 recipes.

BulletPowderChargeVelocityCOALPrimer
SFT AFRAME 100grAccurate A435058.2–64.6 gr3053.0–3503 fps3.160Winchester LR, Large Rifle
NOS E-TIP 100grAccurate A435056.5–62.7 gr3072.0–3350 fps3.240Winchester LR, Large Rifle
HDY SP 100grAccurate A435059.4–62.5 gr3301.0–3512 fps3.180Winchester LR, Large Rifle
Nosler Ballistic Tip 100grAccurate ACCURATE 252028.6–31.8 gr2512.0–2767 fpsWinchester WLR
Barnes TTSX 100grAccurate ACCURATE 252028.8–32.0 gr2476.0–2737 fpsWinchester WLR

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