I have a Marlin 1895 that I set up with a Marbles tang sight, it is accurate but awkward and uncomfortable not to mention delicate. I ended up with a Williams peep that I liked much better. My eyes went also so I put a scope on it. I got new glasses last week but don't know how it will work out yet.
Texas, I have a high power scope on my 336A to work out loads. As soon as I get that done I have a K6 for it. Some rifles just look right with a blue steel Weaver.
Dave