If you can get the brass and the proper bullets or cast your own bullets the .50-95 is very doable.
Reload the .50-95If you can get preformed brass the .45-75 would be a lot of fun. But if you are forming the brass from .50-95 brass it can be a pain according to Mike Venturino with lots of cases wrinkling.
.45-60 is a shortened .45-70 so the brass is easy to source but obviously you give up some velocity to the .45-75.
The .40-60 gives you all the power of a .41 magnum pistol in a 10 pound rifle. The brass is just necked down .45-60 brass so it's easy to source. But I can't figure out what the purpose of this caliber was in 1876 let alone today.
A casual search shows most of the brass for these cartridges is out of stock. So in today's climate the .45-60 might be the best option for brass availability in the near future.
Quote History Quoted:
is that 45/75 a real option or is that a miskey of 45/70?
If available 45/70 is generally a good/best choice due to available ammo , components and data
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The 1876 action is not long enough for the .45-70. That's why the bottleneck .45-75 was developed.