Just thought I would step in, I have a 1891 argentine that is my favorite rifle to hunt with, its all numbers matching the most beautiful blueing and stock, its slightly sporterized with williams rear peep site and the forend trimmed a little and no cleaning rod, still got the barrel band looks great. I shoot mine all the time, just took a 5x6 black tail on saturday with it, mine shoots amazingly well, my dad has been shooting it since he was in school 60-70s and my grandpa did before that, im thinking im going to start reloading for it though 35 bucks a box is a little steep.
I do think that i would stay away from larger cartridges the receiver is not stong enough, i have heard of folks doing so and stretching the receiver.
Hope you figure it out they are a cool rifle.
TC