.257 Roberts, 22-Inch Barrel Load Data

14 published .257 Roberts, 22-Inch Barrel reloading recipes across 3 powders and 5 bullet manufacturers, with bullet weights from 75 to 120 grains and recorded velocities between 2,714 and 3,314 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
14
Powders
3
Bullet makers
5
Bullet weights
75–120 gr

Sample .257 Roberts, 22-Inch Barrel loads

The first 5 of 14 recipes.

BulletPowderChargeVelocityCOALPrimer
Sierra pointed softnose 100grAlliant RL-2250.0 gr2,987 fps——
Nosler Ballistic Tip 100grAlliant RL-2250.0 gr3,044 fps——
Nosler Partition 100grAlliant RL-2250.0 gr3,011 fps——
Hornady spitzer boat-tail 117grAlliant RL-2248.0 gr2,802 fps——
Sierra spitzer boat-tail 117grAlliant RL-2247.5 gr2,714 fps——

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