A bit of apples to oranges but here goes.
180gr sst in my 308 on hogs and deer. Good wound channel but doesn't always exit. I haven't weighed the recovered bullets but I would say 70% weight retention on average BUT about half of the bullets fragmented more than I am excited about. Overall its very effective and a bit more explosive than the Hornady interlock. If it was life or death, or I had to eat right up to the bullet hole, I would go with a tougher construction.
the 162 BTSP interlock out of my 7mag runs around 200 FPS faster. It almost always exits. On the few occasions where I recover a bullet, it usually retains 90% + with a few outliers when it hits heavy bone. Rarely I will have some kind of separation, usually with a few small bullet chips, 65% weight retention in the lead core, and 60% of the copper jacket in one piece, the rest scattered in pieces around the heavy bone it hit.