The 125 gr. Golden Sabers are .357 diameter. The 38 S&W bullets are .361 so the GS would not engage the rifling, therefore, no accuracy at all not to mention reduced pressure and velocity. I've loaded the GS in my 38 Spl. with good accuracy at around 950 fps out of a 4 " S&W Model 10. I don't recall where I read it, I think Remington recommends velocity over 800 fps (just not positive) for the GS to have reliable expansion.