Hunt public land at your own peril... Never been turkey hunting on public land, but they are packed during the regular, rifle deer season. Bow season is much less congested and a little less dangerous.

http://mdc4.mdc.mo.gov/applications/moatlas/AreaList.aspx?txtUserID=guest&txtAreaNm=s

This site will take you to all of the Conservation areas. They are broken down by county, region, etc.