From this story on ky3.com:
It's called Missouri's alternative methods deer hunting season. It runs from now through Christmas Day. More hunters are hitting the woods with a historical game plan. Hunters have used black-powder muzzleloader rifles for years, but the Department of Conservation says there was an increase in people interested in hunting with handguns and crossbows. They wanted to expand opportunities to use those tools without hurting the deer population. If hunters want to be a little more traditional, they can use longbows or even a tool called an atlatl which is like a spear. Officials say hunters like the historical aspect as well as the challenge.