From the 1895 Winchester catalog ........
.40-60 - 210 gr. - 1,475 f.p.s. - 28" barrel
.45-60 - 300 gr. - 1,271 f.p.s. - 30" barrel
.45-75 - 350 gr. - 1,343 f.p.s. - 30" barrel
.50-95 - 300 gr. - 1,495 f.p.s. - 30" barrel
In 1910, WInchester upgraded the ballistics in most of their cartridges........
.40-60 - 1,533 f.p.s.
.45-60 - 1,315 f.p.s.
.45-75 - 1,383 f.p.s.
.50-95 - 1,557 f.p.s.
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