Welcome, and thank-you for stopping in! Looks like you heard about open-carry from the Gazette article?
You do not need a permit. As long as you are legally allowed to own a firearm you may carry openly (not concealed).
You can have a round in the chamber. That is perfectly legal.
here is a brochure I put together that gives you the basic information needed to carry in Wisconsin:
WCI Tri-Fold rev 0.pdf
That is a 2 page brochure. Its meant to be tri-folded, so the columns in the brochure don't appear in the correct order unless you print the brochure (2 sided) and fold it properly. But all the info is there.