Yes and yes....

The .308 is very capable of cleanly killing black bear and moose at ranges out to 300 yards...You don't need a cannon to kill those critters.. As with any game good shot placement is the most important issue..

I'd recommend a 180 grain bullet, but a 150 or 165 grain bullet would do the job also, as long as you put it in a vital spot... Shoot 'em in the ribs and you've got meat...