Hi guys,
I am kind of new here and I started my pyro FX study recently. Currently I am working on creating a big gun firing of Battleship, something looks like below. I tried to use the shelf tool fireball to create it, however, I didn't get the right result on fireball's shape. it looks like I got a wrong force field as drag to drive it. I think I have at least two goals to achieve.
1.fireball's speed.
2.fireball's shape.

I am also thinking of adding some collision geo to simulate the gun and use it to push the pyro out.

Anyone who has experience on those kind of works could give me a suggestions?

Cheers,
Gu