Document Size Etc.

I’ve been using Column View for a recent database and wondered why when I click on a document to open in its own window, that window will be so different from another document? Some documents open at the top of my screen, some at the bottom, some enlarge to the borders of the document, and some only open so a little bit of the document shows. Not real consistent! Is there any way to set a default? something like “open to document border, center on screen”?