I keep a .17hmr in my truck all the time. I was riding at the farm one day checking cameras and had about 100lb sow run out and stop about 40-50yds quartering away and I didn't have a head shot so I figured I'll try a shoulder shot. I am pretty sure that felt like a mosquito bite to her. She arched up made a loud noise and hauled arse. No blood or anything in my brief look for her and she returned within 48hrs to my camera. I wouldn't recommend one for hogs. I have however turned a yote for a back flip at about 125yds with mine.