I was looking through the Midway USA catalog and noticed they offered a lot of .38 special ammo. They have 85 and 100 grain frangible ammo, which makes sense for indoor spaces and the like. They have the classic lead selection, a few jacketed hollowpoints and softpoints in various weights, they have totally encased ammo for indoor shooting, then they have the FMJ cheap ammo.
Why on earth do ammo makers make these light FMJ loads? They aren't enclosed at the base, so it isn't like it's clean indoor ammo. Mostly it comes in weights from 125 to 140 grains, even one company offers a 158 grain flatpoint. What applications would a slightly faster FMJ bullet be preferable over a traditional lead slug?