I got a couple of 50-year-old reloading manuals with the gun. They make for interesting reading in their own right. The one thing that seems abundantly clear already is that reloading for this particular cartridge, even without current data, shouldn't be too hard. The bottom line is that the 7 x 61 Sharpe and Hart is a 7mm magnum that is quite similar (though a bit smaller) than a 7mm Weatherby Magnum. It can move a 160 grain hunting bullet downrange at around 3,000 FPS, or chuck out a 130 grain soft-point at more than 3,300 FPS.
Some general information:
Case length 2.402
Case width at belt .532
Case width at shoulder .476
Case powder capacity: around 70 grains of 4831
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