I currently own a 9mm/38 1911 4.25" slide with Nowlin 9mm unramped barrel. Gun would be for defensive use. I know the 38 Super has a bigger case and potentially more velocity but I am beginning to wonder if it is worth the bother when I have so many reasons to stay 9mm. With the readily available +p and +p+ 9mm ammo I really dont see any advantage. It seems like ammo makers are wringing every bit of performance they can out of factory 9mm while factory 38 Super ammo seems to be stuck in 38 ACP mode. Even the much touted Corbon only loads same bullets 75 fps faster. And I assume the fact that the data comes from a 4" 9mm and a 5" 38 would make the difference even smaller. So I guess my question is does anyone know of a reliable not overpriced readily available source for 38 Super full power defensive ammo ? Something that would justify the expense of a new barrel, maintaining another set of dies and components and dealing with brass ?