Just south of Marion is Shawnee National Forest. Hike for 5 minutes into the forest and start shooting. You have to be a certain distance from public roads and public areas, but that's about it as far as rules go. I wish I lived closer to Shawnee. BTW Squirl season is about to start, You can use any caliber of rifle or gauge of shotgun you want to hunt them with in Shawnee.