I have taken over 200(I hunt in two states,90% of these were bucks)deer in the past 21 years of hunting.During the last 5 years all my deer have been take with either 30-06 150 grain BST or 270 130 grain BST.Most of the deer have dropped in their tracks,even when my shot was a little off.The most a deer(only one)has traveled after being shot with a BST was about 40 yards.I have tried Seirra Game Kings,Core-loks,Fail-Safe,etc.Once I tried the BST I was sold.You will not get as many pass thru's but you will find your deer in their tracks or close by.Using the BST I have killed deer from six yards to 275 yards.I think it is because the BST use most of their enegry in the deer.If you think you need a bullet that will travel thru a deer use another bullet,but if you want to get your deer instead of a 200-300 blood trail use a shoot-thru type bullet.By the way thedeer I shot at six yards did not pass thru but fell in his tracks.