I used a pre-screened litho film in the early 70's for special effects it worked well even enlarged. However I wanted to see medium to large dots and I was enlarging.

It's really an question/answer for the HybridPhoto forum, but as I've used this system fully analog anyway it's the same answer. You are only ever going to be able to make contact prints that look at their best like a single colour litho print, with regards to dot pattern. Remember high quality B&W books are usually Duotone, and some are full 4 plate colour.

Ian