.458 Winchester Magnum Loads Load Data

15 published .458 Winchester Magnum Loads reloading recipes across 10 powders and 1 bullet manufacturers, with bullet weights from 300 to 510 grains and recorded velocities between 1,870 and 2,470 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
15
Powders
10
Bullet makers
1
Bullet weights
300–510 gr

Sample .458 Winchester Magnum Loads loads

The first 5 of 15 recipes.

BulletPowderChargeVelocityCOALPrimer
SJ 300grAlliant 240049.0 gr2,200 fps——
SJ 300grAlliant 240044.6 gr2,100 fps——
SJ 300grHodgdon H-419863.0 gr2,400 fps——
SP SP 350grHodgdon H-419868.0 gr2,470 fps——
SP SP 350grIMR IMR-303168.0 gr2,200 fps——

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