If you have no desire for a semi 308 before you shouldn't have a desire for one just because it might go away. I don't want a sex change, if they outlaw sex changes next month, I'm not rushing to get one today. That thought process is great for gun sales though, which is why gun makers love every scare that comes along. Their sales go through the roof. A lady I work with has never owned a gun in her life, after the last go round she owns 3 handguns and 2 ar's, and wants her money back for 5 guns. She has no use for them but the 'what if I can't get one' thought made her dump a lot of money.
And most semi-center fire hunting rifles I've played with were novel, but not novel enough for me to spend money on them. Too heavy and unwieldy for me. Although I guess .223 is legal in Wy this year so I could go hunting with my AR if I wanted to.
Caliber-wise the rule of thumb I still go by: Deer .243 class minimum, Elk .270 class minimum, brown/grizzly 30-06 class minimum. And that's MINIMUM. If you show up in Canada chasing grizzly's with a 30-06, your guide isn't going to be real happy unless he knows you really well.
The 30-06 loaded correctly takes care of north america.
Bullet selection is important for the game. Friend of mine and I both dropped cow elk a couple years ago at similar (close in) ranges, both were double lung and clean shots. His was 80lbs lighter than mine. He was using a 200+gr 300 winny factory load, I was using 150gr ttsx out of a 30-06. I recovered his 300, it never exited and the ttsx was gone to parts unknown. I also recovered a 460 rowland (similar ranges again), it penetrated the same as his 300.
Everything was equally meat in the freezer, but the barnes bullet performed better.