"A 25oz SP-101 is the smallest I'll go with .357 magnum"
I had a 27 ounce 3" SP101 and liked it but it was too light for me to shoot .357 comfortably and too heavy to make sense as a .357 light/.38 Special. I now have a .357 LCR which is 17 ounces and is comfortable for me with mild .357 and max .38 Special loads. Better trigger but no hammer. I like a hammer. Many have no problem with hot .357 in the SP101, but not me.