As a kid, I used to shoot for the shoulder. My dad didn't want me taking a neck shot until I was older. I made the decision for him when I got to be 10-12 or so. I lost a deer from a shoulder shot, which I was pretty sure was well placed. I was shooting Barnes 117 gr round noses in a 6mm rem, and it just punched a hole through him. I tracked him until dark, but no sign. Lost the blood trail at about a mile. He probably died and I never found him. I even watched for buzzards the next few days, but no luck. After that, I swore I'd only shoot for the neck or high shoulder. The last 4 I've shot(for myself) in the last 10 years have all been clean, one shot kills, with one shot to the neck either in the Adam's apple or in the ear(which was a misjudement of range and altitude. The bullet shot about 6" higher than I thought!!) In one ear, and part of the bullet came out the other. Talk about a one shot kill, and NO wasted meat!! Not that I'll try that again, though.
But the bullets I listed at the top, and those Lost River's I had a pic of, they are designed specifically for target use. I wouldn't want to shoot that at anything but a hog. The AP mil surplus ammo is ok for hogs, too. I just want a kill. I've got some . 308 surplus, too. In the 223, the 62AP is about the only thing that will take a large boar down. Nothing else will penetrate deep enough to get the job done, and a running head shot in oak shinnery is beyond my skill level... ... the APs get through the brush, and penetrate, making a kill. Of course, you have to be mindful of what they are, too. NO shooting around cattle or horses, period!! Or anything else you don't want small holes in!!
Heart shots are ok, but I saw a British Columbia moose run 1/2 mile, cross a river, and stand looking at us for a few minutes until it died. It's heart was jellied, but it still ran all that way!! On another hunt, I saw a guy shoot an elk, and it was a clean heart shot, but it ran almost a mile downhill. NOT FUN!! I had to pack it out 200 yards by foot to my horses, as it was too rough to take them down. That sucked. After that, I always back my clients up. I use a . 270 or . 284Win, and clients will scoff at it until they empty their rifles at a gut shot bull running away, and I drop him with a single spine shot!! I'm not tracking another one for 10 miles. And they're not going to camp, either!! Screw that!! They shot it, they're there for the hunt, they're going!! When they get too tired to go on, I tell them to stay put until I come back for them. They'll earn supper when we get back that night!! No more of that waiting at camp BS!! Learn to shoot or don't come with me!!... ... ... ... sorry, kind ranting there... . I don't do that anymore, and that's why!! My job was to get them into a comfortable distance to shoot the animal, but many just can't shoot. I don't do that well in public, I guess. I don't think I'd keep a job at a counter for more than 20-30 minutes... ... . or the first a-hole that came in, whichever happened first!!