Hi Tim,
Technically, it's illegal to 'target' shoot on Michigan state land, period. So the only way to stump shoot, legally, on state land is to supposedly be afield hunting, with a valid hunting license. (It's amazing how often I miss those invisible red squirrels and hit stumps
The other catch is that you need to wear blaze orange when small game hunting (stump shooting), or you could be in violation.
Here's what it says in the hunting guide:
License Requirement:
Possession of Firearms and Bows and Arrows:
A person taking or attempting to take game and in possession of a firearm, slingshot or bow and arrow must have the appropriate hunting license with them and must produce the license upon the request of a conservation officer or other law enforcement officer.
A hunting license is not required when target practicing or sighting-in a firearm at an identifiable, artificially constructed target, and there is no attempt to take game. A hunting license is not required for the carrying of a pistol for personal protection by a camper, hiker or person engaged in other recreational
activities if there is no attempt to take game.
State Parks and Recreation Areas:
All state parks and recreation areas are closed to hunting from April 1 through Sept. 14, except in areas designated open during the early Canada goose season and spring wild turkey season.
It is illegal to target shoot in a state park or recreation area, except on a designated shooting range at Bald Mountain, Island Lake, Ortonville and Pontiac Lake Recreation Areas.