In pistol FMJ's are a little different than JHPs, the FMJ's have a "naked base" which is more compressible than the solid copper base of a JHP (reverse drawn jacket). This matters a lot more in rifle than pistol though.
This is from Hodgdon for 9x19, which I assume is what you meant by 9mm.
125 GR. SIE FMJ Winchester 231 .355" 1.090"
4.4 1009 24,600 CUP 4.8 1088 28,800 CUP
Hope it helps.
Machine guns are awesome until you have to carry one.