BWalker,
The 140 7mm Ballistic Tip was one that was actually never changed, according to an old friend who worked for Nosler at the time.
In the early 1990's I shot a pronghorn with one from a 7x57, which obviously wouldn't stress the bullet much. But the buck was quartering away, and the bullet hit about 2/3 of the way up the chest, going through about six inches of spine and breaking the far shoulder before exiting. Pronghorns have hard bones, harder than cattle, and though the bones aren't thick have seen bone-shot or angling pronghorns stop some pretty stout bullets, including Partitions and TSX's.
