338 WBY RPM Load Data

65 published 338 WBY RPM reloading recipes across 17 powders and 5 bullet manufacturers, with bullet weights from 185 to 265 grains and recorded velocities between 2,275 and 3,150 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
65
Powders
17
Bullet makers
5
Bullet weights
185–265 gr

Sample 338 WBY RPM loads

The first 5 of 65 recipes.

BulletPowderChargeVelocityCOALPrimer
BAR TSX-BT 185grAccurate A406458.0–63.3 gr2757.0–2996 fps3.370Federal 215, Large Rifle Magnum
BAR TSX-BT 185grRamshot Big Game64.5–70.6 gr2936.0–3108 fps3.370Federal 215, Large Rifle Magnum
BAR TSX-BT 185grHodgdon H435065.3–71.8 gr2865.0–3096 fps3.370Federal 215, Large Rifle Magnum
BAR TSX-BT 185grHodgdon H489553.8–58.3 gr2786.0–2964 fps3.370Federal 215, Large Rifle Magnum
BAR TSX-BT 185grIMR IMR 406456.5–61.7 gr2783.0–3012 fps3.370Federal 215, Large Rifle Magnum

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