I have used the 200 grain bullet in the 300 Win Mag and the 30-06 for elk. I have also used the 190 grain Hornady in the 308 for elk. I never noticed any real difference between the 180 grain and the 200 grain. However on a shoulder or other major bone hit, it may make a difference. The 180 is plenty of bullet though from any 30 caliber.