Has anyone tried it here?
I'm just scratching the surface as far as building a mission and of course, no matter how much work you put into it, you still can't shoot anything. But it has capabilities like no other mission builder I've seen. I just wish it was more user friendly. There are triggers galore and you can add 3D objects of whatever you might dream up.
If you're not familiar with it and have FSX Deluxe, look on disk 1 and install the SDK and then SP1 for the SDK (download it). Then load a free flight and open it under the tools menu.
From the looks of it, I would think the ability to drop bombs would be possible, but a lot of work with limited functionality.
If you have FSX and haven't tried the default missions, try them. Some are quite challenging and some are quite fun.