The only bullets I know that will reliably expand at 850 fps or so are the Gold Dot Short Barrel versions--typically the 135-gr.
However, the 158LSWC-HP bullets (Hornady or Speer) do have a decent track record for SD shootings--with some expansion and penetration.
Personally, I carry the GDSB 38+P 135-gr. factory round in the summer, and the Rem 38S12 "FBI load" in the winter. Both are shootable in lightweights.
Jim H.