Anyone that says a 223 does as good a job as a 243 needs to actually kill a few with a 243. Sure 223 will kill them but with a larger/faster bullet, you can be off a little and still not have to chase them down. There a reason contest hunters want more horsepower. All the guys saying “just work on shot placement” need to realize that some guys like to be able to knock down runners on the spot with less than ideal shot placement.