RE: have 30.06 buying 300 win mag worth it?
As long as you can shoot the 30-06 well and you really like it I'd stick with it. The 300 win is my personal choice and the one I use the most. If I was to buy another rifle in the power class as in your case I would buy one like the .375 h&h. Then you would have a well rounded selection of guns from deer hunting to alaskan brown bear. It's all about your intentions for the caliber. It doesn't take power to kill only precision. And its alot cheaper to get in practice with a 30-06 vs. a 300 winmag. And if your looking to buy more guns by all means have fun and shoot em all.