You must use a 30 cal, at a minimum. To accommodate my fall turkey hunting plans in Idaho, it looks like I will have to modify my arsenal to be legal.
https://idfg.idaho.gov/sites/default/files/seasons-rules-upland-turkey-2022-2023.pdf
https://idfg.idaho.gov/sites/default/files/seasons-rules-upland-turkey-2022-2023.pdf