TL-50 Secondary Fire Mod does NOT deliver a "lethal" concussion blast

Yeah, I was hoping for the same effect as in SWBF1, but it is definitely nerfed compared to that. I have gotten a kill with it from a rooftop shooting down directly on someone's head, but just one time. I was hoping for more since I had to grind to unlock it, but have since gone back to the reduced spread and have given up on the secondary fire since I was getting killed attempting to get kills with it.