I load 4.5grs for a ballistic duplicate of Winchesters standard load using 158gr LSWC or LRN and 4.7 grs to duplicate their +P load with 158gr LSWCHP's. This data was from Winchester and not Hodgdon's. Velocities are within normal variation one would expect from different handguns vrs the factory published, IE. +/- no more than around 25 fps and varies up and down depending up on the particular gun of the same barrel length used.