.257 Remington Ackley Improved / .257 Ackley Improved Load Data

90 published .257 Remington Ackley Improved / .257 Ackley Improved reloading recipes across 9 powders and 1 bullet manufacturers, with bullet weights from 60 to 120 grains and recorded velocities between 2,458 and 3,962 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
90
Powders
9
Bullet makers
1
Bullet weights
60–120 gr

Sample .257 Remington Ackley Improved / .257 Ackley Improved loads

The first 5 of 90 recipes.

BulletPowderChargeVelocityCOALPrimer
Speer Speer 100grHodgdon H-38040 gr2,704 fps——
Speer Speer 100grHodgdon H-38044 gr2,981 fps——
Speer Speer 100grHodgdon H-38042 gr2,862 fps——
Speer Speer 100grHodgdon H-57058 gr2,813 fps——
Speer Speer 100grHodgdon H-57056 gr2,705 fps——

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