.375 Improved Load Data

29 published .375 Improved reloading recipes across 3 powders and 2 bullet manufacturers, with bullet weights from 270 to 300 grains and recorded velocities between 2,750 and 3,024 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
29
Powders
3
Bullet makers
2
Bullet weights
270–300 gr

Sample .375 Improved loads

The first 5 of 29 recipes.

BulletPowderChargeVelocityCOALPrimer
Hornady Hornady 270grIMR IMR-435091.0 gr2,870 fps——
Hornady Hornady 270grIMR IMR-435093.0 gr2,930 fps——
Hornady Hornady 270grIMR IMR-435092.0 gr2,906 fps——
Hornady Hornady 270grNorma N-20493.0 gr2,902 fps——
Hornady Hornady 270grNorma N-20492.0 gr2,883 fps——

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