.458 Winchester Magnum Reduced Loads Load Data

17 published .458 Winchester Magnum Reduced Loads reloading recipes across 9 powders and 5 bullet manufacturers, with bullet weights from 300 to 405 grains and recorded velocities between 1,312 and 2,124 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
17
Powders
9
Bullet makers
5
Bullet weights
300–405 gr

Sample .458 Winchester Magnum Reduced Loads loads

The first 5 of 17 recipes.

BulletPowderChargeVelocityCOALPrimer
Sierra FP 300grAlliant 240032.0 gr1,540 fps——
Hornady HP 300grHodgdon H-32257.0 gr1,784 fps——
Sierra HP 300grIMR IMR-303160.0 gr1,902 fps——
Sierra HP 300grIMR IMR-419854.0 gr2,124 fps——
Sierra HP 300grIMR IMR-419850.0 gr1,863 fps——

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