I'n order to really get the potential out of .357 you really need a decent legnth barrel. I for one am not interested in carrying around or trying to unholster quickly anthing larger then a 3" barrel revolver.
While a longer barrel will almost always give higher velocities with any cartridge, the .357 Magnum isn't exactly a pop gun out of a short barrel. Buffalo Bore advertises their 180gr Hardcast Heavy .357 Magnum loading at 1302fps from a 3" S&W J-Frame.
By comparison, Buffalo Bore's 180gr JHP Heavy 10mm load does 1311fps from the 4.6" barrel of a Glock 20.
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