Speer did make available for reloading .38 Special or .357 Magnum, a 146 grain jacketed hollow point. The catalogue/item number was 4205. It was shaped like the semi-wadcutter bullets you see today. The side of the bullet was copper jacketed. The nose portion was lead.

Speer reloading manual number 9 warned not to drop below the velocities listed in the .38 Special data as there could be core/jacket
separation.

I recall reading magazine articles of the day that this was a very effective round. This was based upon the premise that if the exposed lead did not expand, then the blunt shape of the exposed lead nose would cut a wider wound channel compared to a lead round nosed bullet. I can't speak from experience, I'm only parroting what was popular thinking at the time, i.e. late 70's/early 80's.

Apologies for the thread drift.

JPJ