458 Winchester Magnum Load Data

110 published 458 Winchester Magnum reloading recipes across 34 powders and 15 bullet manufacturers, with bullet weights from 250 to 600 grains and recorded velocities between 860 and 2,952 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
110
Powders
34
Bullet makers
15
Bullet weights
250–600 gr

Sample 458 Winchester Magnum loads

The first 5 of 110 recipes.

BulletPowderChargeVelocityCOALPrimer
BAR TSX FN 250grHodgdon H32275.0–81.0 gr2707.0–2876 fps2.950CCI 250, Large Rifle Magnum
BAR TSX FN 250grHodgdon H419868.0–76.0 gr2683.0–2952 fps2.950CCI 250, Large Rifle Magnum
BAR TSX FN 250grIMR IMR 419866.5–74.0 gr2658.0–2899 fps2.950CCI 250, Large Rifle Magnum
HDY HP 300grAccurate A201568.4–76.0 gr2293.0–2606 fps2.940Federal 215, Large Rifle Magnum
HDY HP 300grAccurate A223070.2–78.0 gr2248.0–2554 fps2.940Federal 215, Large Rifle Magnum

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