.303 British (Somchem Data) Load Data

10 published .303 British (Somchem Data) reloading recipes across 2 powders and 1 bullet manufacturers, with bullet weights from 150 to 180 grains and recorded velocities between 2,181 and 2,658 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
10
Powders
2
Bullet makers
1
Bullet weights
150–180 gr

Sample .303 British (Somchem Data) loads

The first 5 of 10 recipes.

BulletPowderChargeVelocityCOALPrimer
Speer SP 150grSomchem S33537.8 gr2365 fps——
Speer SP 150grSomchem S33542.0 gr2658 fps——
Speer SP 150grSomchem S34140.5 gr2454 fps——
Speer SP 150grSomchem S34144.5 gr2602 fps——
PMP SP 174grSomchem S33536.5 gr2227 fps——

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