http://www.shootingillustrated.com/index.php/11833/38-spl-p-remington-125-grain-golden-saber/

Loading .38 Spl. to +P pressures is a good way to boost the performance of this old cartridge in short-barreled handguns that might not produce enough velocity to initiate expansion with some standard-pressure loads. However, .38 Spl. +P loads can also make lightweight, compact revolvers un-fun to shoot. This Golden Saber load was tested in a steel-frame Smith & Wesson Chiefs Special and was actually comfortable to shoot. Penetration was deeper and expansion wider than all previously tested .38 Spl. loads. I initially assumed this to be the same load Remington uses for its Ultimate Home Defense offering, but based on my velocity and gelatin testing, the loads are not identical.