.300 Winchester Magnum (Parker-Hale Model 1200 Super M) Load Data

54 published .300 Winchester Magnum (Parker-Hale Model 1200 Super M) reloading recipes across 15 powders and 3 bullet manufacturers, with bullet weights from 165 to 200 grains and recorded velocities between 2,426 and 2,948 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
54
Powders
15
Bullet makers
3
Bullet weights
165–200 gr

Sample .300 Winchester Magnum (Parker-Hale Model 1200 Super M) loads

The first 5 of 54 recipes.

BulletPowderChargeVelocityCOALPrimer
Hornady InterBond 165grHodgdon H-100079.0 gr2,747 fps—Winchester cases and Federal 215
Hornady InterBond 165grRamshot Hunter71.0 gr2,948 fps—Winchester cases and Federal 215
Hornady InterBond 165grIMR IMR-435069.0 gr2,813 fps—Winchester cases and Federal 215
Hornady InterBond 165grIMR IMR-483170.0 gr2,852 fps—Winchester cases and Federal 215
Hornady InterBond 165grIMR IMR-782876.0 gr2,906 fps—Winchester cases and Federal 215

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