Cartridges of the World states that 45-70 can be shot in 45-90
chambered weapons. I have a set of 45-70 dies from I think
C&H Engineering. Recon the 45-90 can be loaded with them as with 38 Sp and 357 mag.
Quite a bit of difference in brass length though, 2.1 compared to 2.4, would put that bullet quite a ways from the rifling.
