.257 Ackley Improved Load Data Load Data

19 published .257 Ackley Improved Load Data reloading recipes across 12 powders and 5 bullet manufacturers, with bullet weights from 75 to 120 grains and recorded velocities between 2,814 and 3,462 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
19
Powders
12
Bullet makers
5
Bullet weights
75–120 gr

Sample .257 Ackley Improved Load Data loads

The first 5 of 19 recipes.

BulletPowderChargeVelocityCOALPrimer
Sierra Pro-Hunter 100grHodgdon H-483153.5 gr3295 fps——
Swift Scirocco 100grRamshot Hunter50.0 gr3233 fps——
Swift Scirocco 100grIMR IMR-435049.0 gr3262 fps——
Swift Scirocco 100grAlliant RL-1949.0 gr3070 fps——
Sierra Pro-Hunter 100grHodgdon Varget44.0 gr3151 fps——

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