As far as I know nobody makes a 45-70 bolt gun. I have seen some built on old Mauser actions but have never seen one chambered by anyone else. The Marlin lever is probably your best best bet if you don't want a single shot. The NEF handi rifle is the least expensive way to get into a 45-70. They sell new for about 200.00 at Walmart. I have seen them at Gander Mountain and Sportsmans Warehouse for about the same price. The Ruger Number is also made in 45-70. If money is no concern then look at the Sharps reproductions or the Remington rolling block