I'll believe it, first hog I ever saw shot, was 300 or so lbs (hard to remember it was HUGE at the time, but I was maybe 11) dad hit it with a 22-250 at about 12 feet, scoped at 200 yards, aimed at the nose, hit it at the top of the spine, ripped out a chunk like a baseball, it went down, spinning and roaring. Took a few more shots to kill it, hard to hit them when they won't hold still.
My brother great shot, not so smart at hunting hit one in the back half of its body with a 30-06, it subsequently tried to charge him, Will ripped the rifle out of my brothers hands and shot it again. Did I mention, my brother is bigger than me, Will is bigger than him, and then their parents are huge, the four of them couldn't get it off the ground, they had to use a winch and truch (over 500 lbs)
I like 150-180 because I like a lot of meat, if I had my choice, and a lot of people, thats what I'd shoot, just three people go smaller. Thats as large as I'd go if I had a lot of targets to choose from. Oh, try head shots, it works and try considering the AR, to get two in one firing period, gotta try the semi-auto out once right? (some say head shots are unethical, but from a blind, square in the top of the head works fine)