Do bombs even have hit points?
I didn't check the FS2 tables, so i'm not sure, but i don't think so.
That was my thought, everything target able in game has hitpoints, ships, installations even the build in asteroid field. The "bomb" flag makes missiles target able, but missiles don't have hitpoints, afaik.
I assume they get a hitpoint value from the engine.
Dunno how the engine treats the missiles ( with and without "bomb" flag), but it's surely different then primaries.
Either the missiles with the flag have a predefined value of hitpoints or the thing the damage value of the missiles applies.
But since it's mentioned, that a near miss will destroy the bomb, i guess i'm wrong here.