These are fun
 

Free stuff that go BOOM! Thought you guys might like to play around with some of this stuff. Just stumbled on it the other day.

http://www.detonationfilms.com/free_stuff.htm

I just found these last week myself. They muzzle blasts and smoke I used worked great. I dropped them into Premiere Pro, used a Luma key, adjusted the thresholds a little. From there I could size, rotate, and adjust opactity to blend them right into my footage.

I am definitely adding a Detonation Films thank you in the credits of my film!