300 H & H Magnum Load Data

176 published 300 H & H Magnum reloading recipes across 32 powders and 14 bullet manufacturers, with bullet weights from 110 to 250 grains and recorded velocities between 2,282 and 3,538 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
176
Powders
32
Bullet makers
14
Bullet weights
110–250 gr

Sample 300 H & H Magnum loads

The first 5 of 176 recipes.

BulletPowderChargeVelocityCOALPrimer
Speer SP 110grAlliant Reloder 1979.0 gr3538 fps3.430CCI 250
Speer HP 130grAlliant Reloder 1975.0 gr3300 fps3.440CCI 250
SIE HP-SVK 135grAccurate A270063.0–70.3 gr3015.0–3334 fps3.440Winchester LRM, Large Rifle Magnum
SIE HP-SVK 135grAccurate A435068.8–76.6 gr2990.0–3339 fps3.440Winchester LRM, Large Rifle Magnum
SIE HP-SVK 135grRamshot Grand72.0–80.6 gr2962.0–3336 fps3.440Winchester LRM, Large Rifle Magnum

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