I am hoping that someone can shed some light on this cartridge I have. It looks to me like a 45-70 Government, but I have never seen a bullet like this one. The bullet is lead and has what appears to be a hollow point on the end with a lead ball in it. The ball doesn’t come out and it does not look like it was forced into the bullet, so I am guessing it was made that way. The headstamp says “U.M.C. 45 Govt.” I have been researching it on the internet and am just at a loss as to what it is or its age.