300 Win mag!! hands down. 300 WSM does not have the variance of available loads. Only up to 180 grains. Would be great for dear. For Moose, elk, bearetc. I would stick with the 300 win mag.

see links!
http://www.gunsandammomag.com/techside/myth_0903/

http://www.eabco.com/WSM01.htm