I'm currently loading 7 grains of Unique behind a 158 grain Rainier FP and according to my chrono, I am getting 1030-1078fps, out of my Taurus Tracker 4" barrel. This is a great target load, mild report, accurate, and Unique is burning clean in my gun.
I chrono'd some hot 357 loads last week, 158 grain JSP with 16.6 grains of 296. Advertised velocity is 1610 fps. According to my chrono, I got 1277 fps. Its nowhere near advertised velocity. My 125 grain JSP's with 9.6 grains of Unique, advertised velocity is 1585fps, I got 1350-1400 fps. These are loads as listed in my Lee Modern Reloading second edition.