The Remington Golden Saber .357 is a medium velocity loading and never was full power. Remington and Federal both have 1450fps 125gr. SJHP loads that you are referring to as "THE" load. In general though the 158gr loads are little toned down now as is common in the cartridge world. Probably due to perceived wear on guns. I think that 45 Hardball isn't as hot as it originally was either.

A 1,500 fps 158 grain cast SWC will probably do the same thing as one going 1200 fps, penetrate both sides of a whitetail with small holes on both sides. A guy on another forum killed a whitetail with the .38+P SWCHP. It penetrated all the way to the other side of the chest and stopped under the skin.