Since it IS a rifle you are shooting your loads out of any of the ones listed above will be fine. I use the Hornady 300gr XTP bullets and when buying factory ammo I buy the same off the shelf as I mentioned. Also since it is a Marlin rifle you are using be sure and checkout http://www.garrettcartridges.com
for his +P and +P+ loaded ammo. He only loads .44 mag and 45/70 and though a bit pricey they are worth the extra cost and I need to order a box of each myself as my last purchase ( 5 years ago ) are about to run out. While visiting the site be sure and checkout the whole site and all the info he has on it.