I would say all would depend on your usage of the gun. If all your shots are under 200yds your 35 whelen is all you will ever need. Elk, moose, or kodiak even. Is there enough of a difference to switch to a 300win mag over a 7mm rem mag. If you buy factory standard loads and only can shoot short ranges, there's no need. If you reload and stretch the range out to 400yds, yeah maybe the difference is enough depending on your bullet selection. I'm a reloader myself and I love the 300 win mag. It in my opinion is one of the best calibers ever made for a all around gun. My set up is pushing 11 pounds and it doesn't kick. Buying any magnum in a light weight mountain rifle class is just punishing. I don't like the noise of recoil reducers so I prefer to have the extra weight. Maybe its just me but hiking the mountains with the extra weight just don't phase me. If I only shot distances under 300yds and had to pick a moose/elk gun it would be a 375 h&h mag. But then again sighting it in will not be as pleasant as the 300win mag.