In 357 magnum I normally load 158 grain SWC. I am fond of the ACME Hi-Tec coated SWC or Missouri LSWC.
Recently I ordered some Extreme plated bullets in 38/357. I have used several different Extreme plated bullets in various weights and styles in 9 mm and 40 S&W, but not 357.
I got 500 of their 125 grain Hollow Point bullets, which they say can be pushed to 1500 fps. The first loads were light loads of CFE Pistol and accuracy was not very good. I also fired loads with 9.1 grains of Alliant BE-86. The BE-86 was acceptable, but not great.
The real winner was the Accurate Arms #9.
I loaded the 125 grain plated bullets in new almost new StarLine brass over 15.0 grains of AA#9. The MAX listed load is 15.6 grains on their reloading data site. I shot today from 50 feet instead of 25 yards. I shot my Ruger GP100 with 6" barrel rested and one 5 shot group was just over 1" center-to-center with 3 holes cutting into each other. AA#9 continued today to be the most accurate powder with most bullets in my revolvers.
Going to load a box and check them out in my SP101 with 4" bbl and a Taurus M66 with 4" bbl.
OBTW: posting on 4/13/17 and received email today that extreme has free shipping for Easter.