I have finally lived to my dream of owning one of these in a 45-70 as indicated in another thread. While pondering the purchase of it I also got a 1875 Pedersoli too.
Anyway, I thought I would load up some plinking ammo that I use in my 1895's and in the 1874. Load it conservative and I'm running the DC 457-340-F bullet. Seating it right to the crimp ring it will barely chamber. I'm having to seat it a little deeper that all my other 45-70 loads. This is yielding a COAL of 2.430", and this is leaving rifling marks on the bullet. I do not have a chamber depth guage but a uncrimped / unprimed dummy will seat at 2.450.
I'm beginning to think that something is not right with the chamber on this. Anyone concur? I've yet to fire the rifle yet, just cleaned the bore.
Anyone with experience with one of these 1885 Miroku rifles? Do they inherently have shallow chambers?