I have decided that I NEED a single shot sharps in case I ever get a chance to shoot a bison. Not going to shoot at 1000yds. Probably 200 yds max at the range. Probably 45/70 calibre. Question is do I want a Montana gun or an Italian gun? Also feel free to comment on the calibre. I am almost 80 years old so I don't want to/can't order a gun that is going to take several years to deliver. Local gun shops have not been very encouraging. Any and all comments/opinions will be greatly appreciated.