Description from the readme:
I noticed a number of people enjoying the magnum, but wishing it had a less wussy fire sound. So I decided to try screwing around with it to try to beef it up. The result is a solid "thunk" in place of the original's gentle "pop." I'm hardly an expert with sound, but it's a step up if you thought the original sounded too weak.
Feel free to post suggestions for improvement. I can try to tweak it some more, but I can't make any promises that it'll get any better; as I said, I'm hardly an expert. :b
Anyway, here it is: download