16 published .300 Mashburn Super Magnum (P.O. Ackley Data) reloading recipes across 2 powders, with bullet weights from 130 to 220 grains and recorded velocities between 2,890 and 3,860 fps. Every load lists charge weight, velocity, COAL, primer and case where the source published it.
The first 5 of 16 recipes.
| Bullet | Powder | Charge | Velocity | COAL | Primer |
|---|---|---|---|---|---|
| 130gr | IMR IMR-4350 | 84.0 gr | 3780 fps | — | — |
| 130gr | IMR IMR-4350 | 82.0 gr | 3670 fps | — | — |
| 130gr | IMR IMR-4831 | 88.0 gr | 3750 fps | — | — |
| 130gr | IMR IMR-4831 | 90.0 gr | 3860 fps | — | — |
| 150gr | IMR IMR-4350 | 80.0 gr | 3420 fps | — | — |
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Search all 16 .300 Mashburn Super Magnum (P.O. Ackley Data) loads