.257 Roberts (Winchester Model 54) Load Data

22 published .257 Roberts (Winchester Model 54) reloading recipes across 4 powders and 2 bullet manufacturers, with bullet weights from 75 to 117 grains and recorded velocities between 2,747 and 3,318 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
22
Powders
4
Bullet makers
2
Bullet weights
75–117 gr

Sample .257 Roberts (Winchester Model 54) loads

The first 5 of 22 recipes.

BulletPowderChargeVelocityCOALPrimer
Sierra Sierra 100grIMR IMR-435047.0 gr2,979 fps—CCI 200
Speer Speer 100grIMR IMR-435048.0 gr3,077 fps—CCI 200
Sierra Sierra 100grIMR IMR-435048.0 gr3,101 fps—CCI 200
Speer Speer 100grIMR IMR-483149.0 gr3,041 fps—CCI 200
Sierra Sierra 100grIMR IMR-483149.0 gr3,055 fps—CCI 200

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