.300 Winchester Magnum Handloads Load Data

9 published .300 Winchester Magnum Handloads reloading recipes across 5 powders and 4 bullet manufacturers, with bullet weights from 165 to 200 grains and recorded velocities between 2,902 and 3,228 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
9
Powders
5
Bullet makers
4
Bullet weights
165–200 gr

Sample .300 Winchester Magnum Handloads loads

The first 5 of 9 recipes.

BulletPowderChargeVelocityCOALPrimer
Nosler Partition 165grIMR IMR-435073 gr3,175 fps——
Barnes Triple-Shock 168grAlliant RL-1973 gr3,228 fps——
Speer Grand Slam 180grHodgdon H-483176 gr2,973 fps——
Speer Grand Slam 180grHodgdon H-483176 gr3,059 fps——
CT Fail Safe 180grHodgdon H-483176 gr3,021 fps——

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