11 published .577-.450 Martini Loads reloading recipes across 3 powders, with bullet weights from 360 to 520 grains and recorded velocities between 1,130 and 1,473 fps. Every load lists charge weight, velocity, COAL, primer and case where the source published it.
The first 5 of 11 recipes.
| Bullet | Powder | Charge | Velocity | COAL | Primer |
|---|---|---|---|---|---|
| patched 360gr | Swiss 1 1/2 Fg | 86.0 gr | 1,473 fps | — | Federal 215 |
| lubricated 360gr | Graf FFg | 100.0 gr | 1,454 fps | — | Federal 215 |
| Lyman/Whitworth 475gr | Swiss 1 1/2 Fg | 106.0 gr | 1,376 fps | — | Federal 215 |
| Lyman/Whitworth 475gr | Swiss 1 1/2 Fg | 86.0 gr | 1,352 fps | — | Federal 215 |
| Lyman/Whitworth 475gr | Wano Fg | 100.0 gr | 1,168 fps | — | Federal 215 |
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