RE: How the .243 stacks up
The world is flat. I've fallen off a couple times and it is really nasty out there.
When my son asked me to buy him a deer rifle for the Missouri season, I was strongly tempted to get him a .243. For the ranges he shoots, I think it would be great. But as Santa was thinking about what to get, I figured I couldn't be sure where he might be hunting 20 years from now. Thus, I got a .308. When in doubt, I go for a bigger wound channel.