Loaded with a Nosler Accubond, or one of the other premium bullets; this gun will kill elk or black bear most efficiently - every bit as well as 7 Rem Mag
Using that logic
the 7mmremmag will kill elk or black bear every bit as well as a 300winmag
the 300winmag will kill elk every bit as well as a 338winmag.
and on and on and on
