I'm really confused here. I thought the OP in his original thread wanted a 400 to 600 yard rifle for Muley's.
So a .300WM was the choice. Now a .308 seems to be a good compromise?
This is looking more like a wish thread w/ no apparent direction more than anything. I have hunted Whitetail, Muleys, and Elk. I used a 7mm Remington Mag. At 400 yards w/ the correct bullet there is meat on the table. My .308 is also capable of a 400 yard shot, but leaves Elk off the list. 8x57, 6.5x55, all will do the job.
So I ask the OP, what do you really intend on doing w/ the rifle? The 300WM has some serious recoil, not for the timid. For the average hunter, even a 400 yard shot is pushing the envelope. Sorry, I don't intend to dog anyone, but this is 2 threads and has changed muliple times. JP