[CarbineCaleb]

I think cje1980 is right. Here is a link to tests of various ammo in various short barreled revolvers (1&7/8" - 3") by a S&W forum user with a chronograph. You'll see the numbers for 125 grain loads in .357 are just about what they are for 9mm +P in 125gr at 4" (124gr @1180fps). In fact, some of the snubby performances are closer to the standard 9mm (124 gr @1125 fps).

http://smith-wessonforum.com/groupee...17&f=695107034