i used it on grizzly why do people not consider the brown bear and the grizzly not dangerous game i have taken half of the game in north america all with a german 300 wby,i prefer it better with its 1:12 twist.i have taken game to 800 yards combined with a barnes bullet it will stop what ever you are shooting at i think its the greatest 300 i have not had the chance to compare it to the 300 ultra mag but soon will