Aside from the jackets, the cores of Ballistic Tips were made of harder lead alloys after the original versions proved too tender. So even though the jackets can vary on certain models, they all are tougher than the originals.
I've shot a pile of deer and antelope with 140 Ballistic Tips from various 7mm rifles since the early 1990's and the only bullet I've recovered was from a pronghorn buck shot with the 7mm STW. He was quartering away at around 200 yards and I put the bullet in the rear of the rib cage. It was recovered from under the skin on the far shoulder, after breaking the shoulder.
