Adobe has "weapons" and "explosions" that may help.
https://offers.adobe.com/en/na/audition/offers/audition_dlc/AdobeAuditionDLCSFX.html?cq_ck=1407955238126&wcmmode=disabled
Christian Henson's last vlog interviewed a company with a plugin (Humanizer I think?) with all kinds of effects, and they showed some very convincing gun fire sounds, that you can manipulate with it.