Ok Ive just got this question and a few quirks and discussion...
1) You get exp from participation in firing
2) You get the kill if your bullet hit it last , ala counterstrike
3) You get exp from just being there when a ship dies.
4) combination of the above where one gets most points and others get a tiny bit.
Discussion points....
Awkward micro : people are microing intensively and kinda stupidly to squeeze out exp. example - having 20 cobalts kill all buildings down to 100 health , then letting the cap kill them all.
Exp Spread : How is expierence points spread amongst caps? Do all caps get the alloted amount or is it spread
Bombard Exp : Should caps get expierence points from Bombarding. maybe per second?