I own a 270 WSM (win M70 Super shadow. I have killed 3 deer an 1 elk with it. all 3 deer were shot with 130gr BST's. The Elk was shot with 140gr Failsafe. In the case of the Deers (2 Whitetail 1 muley) they dropped like sacks of potatoes. I mean not so much as a step. The shots were between 75 and 100yards in all cases. The bullet was very effective, very little meat loss. Also, I have not found a more accurate round in my 270WSM than the 130gr. BST's. Some guns have a thing about liking a particular bullet & load. The 270 wsm likes them. Not so much the 140 failsafes. All the animals I shot at are dead though. But at the range, the 140 is not nearly as accuarate