RE: 300 ultra , 300 win. or 7mm ultra ??
If you have never owned a 300win mag or WSM, I suggest you start there. Its a big just from a 270 to 300RUM or 300Weatherby. I like the WSM's. I have had a bunch of RUM's. I have burned up out the throats out of a few under 1000 rounds in one. I have had a hard time getting WSM's to shoot bad. Recoil is very slight.