Not sure if your looking for public or lease/permission. I can't help with the later, and think you are a little late for this season (but never give up!)
Check out http://www.michigan.gov/dnr/0,1607,7-153-10370-31657--,00.html
For a listing of Michigan State Game and Wildlife areas. Outside of that I can not help ya. My sister and fam live in Byron, I keep trying to get my bro in law to check out the Shiawassee area, but he hasn't
Aim for the center of the target... the center of an aspirin is the same size as the center of a basketball. The difference is mental.
John in Michigan.