RE: OPINIONS ON THE REMINGTON 300 ULTRA MAG
Quilly, I have a 300 Weatherby and a 45-70. Not quite what your looking for but close. The 300 kicks more than the 45-70 with hot hand loads. It' s not so much more that you couldn' t handle it. If you can shoot the 450 Marlin with no trouble, the 300 RUM should be managable. Gun weight is the key here, too.
Scott Meier
White Oak Lodge