I know this is an older thread but ever since I witnessed my step dad take out , >repeatedly<, several very large wild hogs ( many over 300 lbs.) with " nothing but" a 22 LR out of a marlin model 60 I call with a capitol B ...B-S!!!!! GUARANTEE a wild boar is far far tougher to put down than a human. people these days have a tendency towards overkill, I mean do we really -need- nuclear weapons to kill people? NO a decent sized stick will work effectively if aimed properly.
My mom made some freekin KILLER boar stew with those! and the teeny little 40 grain bullet did the job just fine.