.300 Whisper / .300 AAC Blackout / .300 Blackout (in an AR)(Handloader issue #339) Load Data

23 published .300 Whisper / .300 AAC Blackout / .300 Blackout (in an AR)(Handloader issue #339) reloading recipes across 5 powders and 4 bullet manufacturers, with bullet weights from 110 to 225 grains and recorded velocities between 945 and 2,411 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
23
Powders
5
Bullet makers
4
Bullet weights
110–225 gr

Sample .300 Whisper / .300 AAC Blackout / .300 Blackout (in an AR)(Handloader issue #339) loads

The first 5 of 23 recipes.

BulletPowderChargeVelocityCOALPrimer
Sierra HPBT 110grHodgdon CFE BLK22.1 gr2216 fps—Remington 7½
Sierra HPBT 110grHodgdon CFE BLK22.9 gr2272 fps—Remington 7½
Sierra HPBT 110grHodgdon CFE BLK23.3 gr2340 fps—Remington 7½
Sierra HPBT 110grHodgdon CFE BLK22.5 gr2255 fps—Remington 7½
Barnes TAC-TX 110grShooters World SBR SOCOM20.0 gr2269 fps—Remington 7½

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