You'll like it, I put a marbles 2.5" tang on my 1895 cowboy so I'd have a functionable long range buffalo repeater if I ever got caught in a stampede.
Course I kept the standard front sight cause I use the standard marlin buck rear sight mostly.
I had to drill & tap one hole in the rifle's tang for the sight to mount correctly.
I've lobbed my hunting load (wheelweight 425gr gc .460 ranchdog @ iirc 1780) out to a hotwater tank @ est. 500 (old style back to target bend over look between your knees range estimation).
Sure it'd go much much farther, but after 24 rounds off a bench it's got a recoil bite a lot more than my 300wm.