I shot my bear last year with a 7mm mag and 154gr sst @ 629 yards. I recovered the bulle. the lead separated from the jacket. But I did find the lead and jacket both stuck under the opposite shoulder skin about 1" apart.
I've shot a few deer with sst's in 308 and 30.06 at much shorter distance with great results. They straight up do damage at close range under 100 yards.