When I've hunted there in the past we found that most of the land to the North, south, and east of town were private ( there are small section of public mixed in). there was a lot more public land to the west (powder river area), but not nearly as many antelope. PM me if you have any specific questions and I'll see if I can help.
Hey, Green--
First year I lived here--early 90's--my most valuable adjustment for going Res. in my 2nd year was to bump my search radius from initially 30-40 miles out to 100 miles out. Turned out the Public land opportunities, esp. for Deer and Lope, availed desirable Hunt destinations--rule of thumb that still holds today, in my ever-so-humble opinion.