Since the mid 1960's I have been using the Sierra 120gr 6.5 in my various 6.5's . Mature muley bucks, some well over 200lbs. . Never had an issue... If you like heavier bullets nothing wrong with that. If you want a light tough bullet with light recoil that will absolutely work ,, Barnes 100gr TTSX & or Nosler 100gr partition.. They kill as well as the heavies with super light recoil...