The 145-grain Winchester Silvertips are indeed good carry loads to use, with less overall kick than the 158-grain JHP loads, and less of the sudden, brutal acceleration of the full pressure 125s. (Do note that there are mild 125s; pay attention to velocity data. 1250 FPS is mild velocity for a 125; 1400-1450 is full-pressure.)
As others have experienced, and said, full-pressure 125 may have less overall kick than the full-pressure 158s, but the sharp, sudden acceleration produces a kick that is harsh in its own way. The 158 may be more tolerable for some, the 125 for others.
The grip shape and weight of the weapon also enter into the equation, of course. Weight not only dampens recoil, but acts as a shock absorber for fast-accelerating loads. A grip that lets the weapon ride lower in the hand, all else being equal, means less upward kick, and more recoil directed straight back.
FWIW, another big reason I like 145-grain .357 Silvertips is because they shoot closer to point of aim, generally, when the sixgun has fixed sights, than the 125-grain loads.