I just bought a standard base as I have rings.What I am worried about is how close those base holes are together.I have not mounted a scope on mine yet.

I have a Marlin 44 mag ,Model 94 that had about the same hole pattern. I had to put a shorter scope on it as a standard length one of 10 inches or so wasn't supported well enough in my opinion.
If you get a set up. Let me know how it worked out.What scope are you thinking about putting onit

If God wanted you to walk and carry things on your back, He would not have invented stirrups and pack saddles