.375 H&H Magnum Load Data

145 published .375 H&H Magnum reloading recipes across 33 powders and 16 bullet manufacturers, with bullet weights from 200 to 350 grains and recorded velocities between 1,909 and 3,186 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
145
Powders
33
Bullet makers
16
Bullet weights
200–350 gr

Sample .375 H&H Magnum loads

The first 5 of 145 recipes.

BulletPowderChargeVelocityCOALPrimer
SIE FN 200grHodgdon CFE 22381.8–89.0 gr2985.0–3186 fps3.350Winchester LRM, Large Rifle Magnum
SIE FN 200grHodgdon H489567.7–75.2 gr2924.0–3117 fps3.350Winchester LRM, Large Rifle Magnum
SIE FN 200grIMR IMR 406468.4–76.0 gr2819.0–3013 fps3.350Winchester LRM, Large Rifle Magnum
SIE FN 200grIMR IMR 489567.6–75.1 gr2834.0–3022 fps3.350Winchester LRM, Large Rifle Magnum
Sierra flatnose 200grIMR IMR-303159.0 gr2,578 fps——

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