Remember there can be widely different MVs when fired from different revolvers having the same barrel lengths and identical loads. That is why no one should believe the MV values given in reloading manuals. +P .38 Special loads typically produce MVs somewhere in the 900-1000 fps range with 158 grain bullets. Standard .38 Special loads will run 800-850 ft/sec. Back when the .38-44 ammunition was being made, the factory-listed MV was in the low 1100 fps range. And it was considered to be safe to fire in any .38 Special revolver.