378 Weatherby Magnum Load Data: 199 Published Loads from 7 Sources
Empirical Precision indexes 199 published loads for 378 Weatherby Magnum from 7 reloading sources, covering 14 bullets and 21 smokeless powders. Most published tables were tested in 26-inch, 25-inch, and 24-inch barrels, and none of the entries report measured chamber pressure (maximum rows cite SAAMI or C.I.P. cartridge ceilings only).
Published Loads199
Sources7
Bullets14
Powders21
Always start low and verify against the original published source before loading.
Coverage by Source (7)
| Publisher | Published Loads |
|---|---|
| Hornady | 94 |
| Barnes | 48 |
| Lyman | 22 |
| Sierra | 15 |
| Alliant | 8 |
| Speer | 8 |
| Hodgdon | 4 |
Powders Covered (21)
Select a powder to view its cartridges, burn-rate position and specifications.
Bullets Covered (14)
Grouped by bullet manufacturer with projectile weight and model.
Barnes (5)
- 235 gr TSX FB
- 270 gr LRX BT
- 270 gr TSX FB
- 300 gr TSX FB
- 350 gr TSX FB
Hornady (4)
- 300 gr DGS
- 300 gr DGX
- 300 gr InterLock BTSP
- 300 gr InterLock RN
Sierra (1)
- 300 gr SBT
Speer (4)
- 235 gr SP
- 250 gr TBBC SP
- 285 gr Grand Slam SP/CANN
- 300 gr TBBC SP