.257 Roberts Carbine Load Data

33 published .257 Roberts Carbine reloading recipes across 14 powders and 4 bullet manufacturers, with bullet weights from 75 to 120 grains and recorded velocities between 2,579 and 3,247 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
33
Powders
14
Bullet makers
4
Bullet weights
75–120 gr

Sample .257 Roberts Carbine loads

The first 5 of 33 recipes.

BulletPowderChargeVelocityCOALPrimer
Nosler Ballistic Tip 100grHodgdon H-38042.0 gr2,828 fps—Winchester Large Rifle
Nosler Ballistic Tip 100grHodgdon H-41444.0 gr2,815 fps—Winchester Large Rifle
Nosler Ballistic Tip 100grHodgdon H-435045.0 gr2,807 fps—Winchester Large Rifle
Nosler Ballistic Tip 100grIMR IMR-435044.0 gr2,801 fps—Winchester Large Rifle
Nosler Ballistic Tip 100grIMR IMR-483146.0 gr2,894 fps—Winchester Large Rifle

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