I load 13.5 grains of 2400 for use in my Marlin 1894C, S&W 627PC, 5" barrel and Desert Eagle, 6" barrel. I get 1140 fps in the 627 and 1350 fps in the DE and 1625 fps in the Marlin 1894C. I use 158 grain SJSP, or XTP/HP bullets and Winchester primers.

When checking jacketed 158 grain factory loads with my S&W 686 6" barrel I got from 1120 fps with PMC to 1465 fps with Federal Hydra-Shoks.

I figure best I can do is chronograph the factory round I want to emulate, the match the bullet being used in it and then try to match the velocity using the powders I reload with. I'm content with 13.3 grains of Alliant 2400 as my basic .357 magnum load in all but my S&W 340 J-Frame.

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Hook686