I have to be honest and admit I forgot about the 45/90 in the 1886. But; what I have read here does ring true and jog my memory. All except the part that compared 45/70 and 45/90 to 22LR and short. No, wrong! AFAIK, the over all total cartridge length for 1886 ammo in 45/70 and 45/90 is the SAME. There is no power increase. It is much more like 22long and 22 long rifle. That is a difference in bullet weight.
They always said you can shoot 45/70 in a 45/90 Winchester. It must be ok with 405 bullets.
Trading an original 45/90 to get a 45/70, OMG, rethink that idea!! Nobody cares about a Miruko 45/90 but a real Winchester 45/90 is a big deal. It used to be the 50/100 was the big deal. Nobody can afford those any more, so today best most can hope for is 45/90. Now we are talking collector bragging rights. No practical gain in one 45 over the other.
As for Miruko, if they want to get my attention, for the $$$ involved, they should do a 50/100 or stay with 45/70.
