I've recently made threads regarding failing sounds, solved by using the correct directory, and about failing custom powerfist sounds, not solved but explained by the txt block built into the animation file itself. So what's going on now? In the GECK it plays the sound both when I open the sound object and when I set it on my weapon's dialog window, but in game there is simply no firing loop at all - it doesn't even default back to the vanilla sound.
[EDIT:] Just for the heck of it I checked the .kf files the minigun uses but of course it doesn't call the sound, as it A.) didn't play in-game and B.) is used by other weapons.