300 Winchester Magnum Load Data

981 published 300 Winchester Magnum reloading recipes across 89 powders and 22 bullet manufacturers, with bullet weights from 100 to 240 grains and recorded velocities between 1,302 and 3,709 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
981
Powders
89
Bullet makers
22
Bullet weights
100–240 gr

Sample 300 Winchester Magnum loads

The first 5 of 981 recipes.

BulletPowderChargeVelocityCOALPrimer
Speer RNSP 100grAlliant Reloder 1572.0 gr3604 fps2.960CCI 250
SIE HP 110grAccurate A435071.6–79.5 gr3116.0–3541 fps3.170Federal 215, Large Rifle Magnum
Sierra HP 110grAccurate ACCURATE 435071.6–79.5 gr3116.0–3541 fps—Federal 215
SPR SP 110grHodgdon H100080.0–85.0 gr3189.0–3392 fps3.215Winchester LRM, Large Rifle Magnum
SPR SP 110grHodgdon H38066.0–73.0 gr3282.0–3544 fps3.215Winchester LRM, Large Rifle Magnum

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