Ok, now that would be a completely seperate bug. Not quite sure what's happening there. Oh, wait, I do. AAAf beams are supposed to pierce fighters, but larger targets are not supposed to have beams punch through them until they are destroyed. I'm assuming there's something involving the shield code there, since that's not an error you'd normally see. It also may have to do with the targeting code for beams, some will intentionally be inaccurate for balance purposes. If I knew a little more about how that weapon was set up, I might be able to tell more. The beam-pierce code is command-line controlled (which makes no sense to me) so you probably wouldn't see it having any effect there.