RE: OPINIONS ON THE REMINGTON 300 ULTRA MAG
I have owned two and currently have one on a 700 action with krieger barrel and H-S stock. It is my target and moose gun. Reason I have stuck with it is I got all the loads/knowledge/powder and brass. If I had it to do over, I would stick with the WSM' s. When I reload for friends with the WSM' s, its hard for me to get them to shoot bad. Std Dev in velocity is like 10 to 15fps, which I can never achieve with the RUM' s. The RUM' s are a tad more finicky to develop and seem to change more with temp as compared to 300WSM. I have a 200 gr matchking load that is awesome. Also shot the Accubonds with great success.
For the hunting you are doing, I would buy the WSM' s.