My 20" Tikka in 6.5C has killed 7 elk and 5 mule deer. 11 of the 12 were between 300-400 yds. 10 were 1 shot and done the other 2 got an extra for insurance. Haven't lost one yet. If you put a hole through the heart or both lungs they die. All were killed with off the shelf Hornady 143 ELD-X ammo. Correction forgot about letting my buddy use my rifle when his scope came loose on our mule deer hunt. 7 elk and 6 mule deer total. His shot was just over 400yds. Bang flop.