Cartridge
.338-378 Weatherby Magnum
0.338" (8.6mm) · .338-378 Wby Mag · centerfire
3 factory loads from 1 manufacturer, on 3 projectiles.
Factory loads
3
Bullet weight
225–262gr
Muzzle velocity
2950–3180 fps
Muzzle energy
5051–5197 ft·lb
Bullet Drop (inches)
One load from each of the 3 most-loaded bullet weights, plotted from the bore line to 1000 yards in ICAO sea-level air — measured from the muzzle rather than from a sighted-in rifle, so these curves compare the loads against each other and are not holdover figures. Compare these at your own conditions →
Weights are the ones with the most factory loads; within each, the load visitors compare most often. See every load →
Bullet weights loaded
- 225gr1
- 250gr1
- 262gr1
3 bullet weights across 3 factory loads.
Factory loads
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Weatherby
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.338-378 Wby Mag · 225gr · TTSX
Weatherby
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.338-378 Wby Mag · 250gr · Partition

Weatherby
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.338-378 Wby Mag · 262gr · Hammer Hunter