I remember well the first woodchuck I shot. I was about 6 yrs old and squirrel hunting with my dad. We were in the woods about 30-40 yds from field edge. My dad spotted a Chuck and handed me my Winchester .22. It was mine but I wasn't aloud to carry it yet. As I took a rest off side of a tree I remember him saying " gotta shoot him in the head with a .22 or he might make it back to his hole".
Dad & I ended up belly-shooting them so they'd go down their hole & die there. The turkey vultures loved the free meal from a head shot, though.