I am located about 50 miles south of Macy. My son is about 25 miles south of Macy. He used to do some upland bird hunting on either the Macy or Winnebago res. I have been through there countless times but am afraid I can't tell you much.
This is pretty rugged country and I believe the Omaha res. runs from US-77 all the way to the Missouri River and even a short distance into Iowa in places.I would guess that there are alot of minimum maintenance roads also. I have no doubt that there are some very good whitetails in this area.
As for maps, the Nebraska Game and Parks website will provide you with topo maps if that is what you are looking for. Check their site. I think you can get maps of about anywhere in the state.
You might also try Nebraska Traditional Archers. I believe there is a link to their site from here.One of the members may be familiar with the area.
Sorry I can't be of more help.
Good luck on your Nebraska hunt.
Ed