The semi-auto proponents have rightly pointed out the fact that we need to compare a 4" revolver with a 5" semi-auto
really? Because from my experience a 5 inch auto have more FPS than a 5 inch revolver of the same caliber I have seen 9mm and 357magnum in both revolvers and autos.
I think the semiauto platform is superior (as far as bullet speed) to the revolver. I know my 5 inch Coonan Classic will out perform my 5 Inch S&W by about 75FPS depending greatly on the ammo, though there is technically more barrel on the revolver. May be its the cylinder gap?