No difference between my 5" models and the three Commander lengths that I shoot on a regular basis. With 200 gr LSWC's, I like 5.1-5.2 gr of Win 231 for right around 800 fps.
With 230 FMJ's, again with 231, the same load works well, but for a little more oomph, 5.4 grains runs pretty close to the gov't military load ~820 fps. It's a big slug, in either form, and I don't feel that add'l velocity is necessary. Either is very accurate from a good gun.
As always, these are my loads, worked up for my guns after using a GOOD manual for guidance & BTW, I don't abuse my guns with top loads, nor do I load powder puff loads. If interested, do your homework, consult a GOOD manual, consider the pressure implications, and press on.
HTH's Rod