144 published .257 Weatherby Magnum (using Sierra bullets) reloading recipes across 6 powders and 1 bullet manufacturers, with bullet weights from 75 to 120 grains and recorded velocities between 2,729 and 3,953 fps. Every load lists charge weight, velocity, COAL, primer and case where the source published it.
The first 5 of 144 recipes.
| Bullet | Powder | Charge | Velocity | COAL | Primer |
|---|---|---|---|---|---|
| Sierra SPT, SBT or HPBT MatchKing 100gr | Hodgdon H-380 | 56.5 gr | 3254 fps | 3.250 | — |
| Sierra SPT, SBT or HPBT MatchKing 100gr | Hodgdon H-380 | 60.0 gr | 3360 fps | 3.250 | — |
| Sierra SPT, SBT or HPBT MatchKing 100gr | Hodgdon H-380 | 61.8 gr | 3414 fps | 3.250 | — |
| Sierra SPT, SBT or HPBT MatchKing 100gr | Hodgdon H-380 | 58.2 gr | 3307 fps | 3.250 | — |
| Sierra SPT, SBT or HPBT MatchKing 100gr | Hodgdon H-4831 | 64.0 gr | 3162 fps | 3.250 | — |
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Search all 144 .257 Weatherby Magnum (using Sierra bullets) loads