sorry about the dumb ? but I dont know the difference
No such thing as a dumb question here, we all started in the same place
The 300 WSM will fill the bill, the only advantage the 300 WM has over the WSM is with the heavier bullets, say 200 grs and up, which you really wouldn't need for deer and bear inside 650 yds.
I'd look at the 7mm WSM over the 300WSM, plenty of gun for deer and bear, better BC for bullets between 140 and 180 grs, and a little less recoil, but thats just my personal preference.