My closest kill was when I was 16 and I used a home made thrusting spear. I stabbed a mule deer and it died, but I got hurt. My dad was not sympathetic either and heaped some sarcasm on me and that made the whole thing hurt more.
My closest shot on a deer was with a 270 at about 8 feet. (a 270 works better then a spear and I didn't get hurt at all that time)